CEDH · CASELAW;JUDGMENTS;CHAMBER;ENG — 13 octobre 2020

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margin-bottom:12pt; text-indent:14.2pt; text-align:justify; page-break-inside:avoid; page-break-after:avoid } .s69DCC830 { margin-top:36pt; margin-bottom:0pt } .sE9021CBE { width:184.28pt; display:inline-block } .sA2E62387 { width:204.97pt; display:inline-block }     THIRD SECTION CASE OF ZAKHAROV AND VARZHABETYAN v. RUSSIA (Applications nos. 35880/14 and 75926/17)       JUDGMENT   Art 11 • Art 3 (substantive and procedural) • Freedom of peaceful assembly • Degrading treatment • Police brutality against peaceful participants of the Bolotnaya Square political rally and lack of effective investigation • Use of force neither strictly necessary by applicants’ own conduct nor indispensable in the context of quelling mass disorders   STRASBOURG 13 October 2020   FINAL   13/01/2021   This judgment has become final under Article 44 § 2 of the Convention. It may be subject to editorial revision. In the case of Zakharov and Varzhabetyan v. Russia, The European Court of Human Rights (Third Section), sitting as a Chamber composed of:   Paul Lemmens, President,   Georgios A. Serghides,   Helen Keller,   Dmitry Dedov,   María Elósegui,   Gilberto Felici,   Erik Wennerström, judges, and Olga Chernishova, Deputy Section Registrar, Having regard to: the applications (nos.   35880/14 and 75926/17) against the Russian Federation lodged with the Court under Article 34 of the Convention for the Protection of Human Rights and Fundamental Freedoms (“the Convention”) by two Russian nationals, Mr Viktor Nikolayevich Zakharov and Ms   Turana Apkarovna Varzhabetyan (“the applicants”), on 1 May 2014 and 26   September 2017 respectively; the decision to give notice to the Russian Government (“the Government”) of the application no.   75926/17; and the decision to give notice to the Government of the complaints under Articles 3, 11 and 13 of the Convention raised in application no.   35880/14 concerning the alleged excessive use of force by the police during the dispersal of the rally on 6   May 2012 and the lack of effective investigation thereof, and to declare inadmissible the remainder of that application; the parties’ observations; Having deliberated in private on 22 September 2020, Delivers the following judgment, which was adopted on that date: INTRODUCTION 1.     The case concerns police ill-treatment of the applicants during a political rally on 6 May 2012 at Bolotnaya Square. The applicants were neither convicted of mass disorder nor accused of any other offence in connection with the relevant events at Bolotnaya Square. THE FACTS 2.     The first applicant (Mr   Zakharov) was born in 1966. The second applicant (Ms   Varzhabetyan) was born in 1945. They both live in Moscow. The applicants were represented by Mr S.A. Minenkov and Mr   A.N. Laptev respectively, lawyers practising in Moscow. 3.     The Government were represented initially by Mr G.   Matyushkin, the Representative of the Russian Federation to the European Court of Human Rights, and then by his successor in that office, Mr M.   Galperin. The public assembly on 6 May 2012 and the applicants’ alleged ill-treatment 4.     The background facts relating to the planning, conduct and dispersal of the assembly at Bolotnaya Square are set out in more detail in the judgment of Frumkin v. Russia (no. 74568/12, §§   7-65, 5   January 2016). The parties’ submissions directly relevant to the present case may be summarised as follows. 5.     Both applicants participated in the political rally on 6 May 2012. The first applicant was one of the organisers of the event. According to them, they neither violated public order nor resisted the police who were present at the assembly. However, during the dispersal of the meeting the police allegedly hit each of the applicants on the head with a rubber truncheon. 6 .     The first applicant submitted photographs. One of the photographs shows some police officers aiming blows at the crowd with their rubber truncheons. The first applicant can be seen in that crowd. Another photograph shows the first applicant being pulled by two police officers. These photographs do not show the actual moment when the first applicant was allegedly attacked with a rubber truncheon. However, two other photographs show the applicant at the site of the events, with his face bleeding. According to the first applicant, having received a blow to the head, he lost consciousness. Other participants in the rally helped him obtain first aid treatment. Later on, the first applicant was taken to a hospital, and he was discharged from that hospital on the same day. He submitted a medical certificate of 6   May 2012 stating that he had been diagnosed with a contused wound of the frontal lobe. 7 .     The second applicant provided links to YouTube videos showing the clashes between the police and the protesters. The videos indicate that the second applicant was surrounded by police officers when she fell and started screaming. The videos also show other participants in the assembly carrying the second applicant and shouting at the police officers, accusing them of hitting an elderly woman, referring to the second applicant. 8 .     The second applicant also submitted a medical certificate stating that on 6   May 2012 an ambulance had been called for her to Bolotnaya Square. The certificate attested that she had sustained a head injury, and had had soft tissue bruises on the right side of her head and in the perineal region. Medical certificates of 7   May and 8   June 2012 stated that the applicant had had health problems as a result of the trauma she had experienced on 6   May 2012. 9.     Neither of the applicants was arrested or charged with any offence in connection with the events of 6   May 2012. Investigation into the alleged ill-treatment of the first applicant Request for a criminal investigation and refusal of that request 10 .     On 23   June 2012 the first applicant asked the Investigation Committee to institute criminal proceedings on account of his alleged ill ‑ treatment during the dispersal of the public assembly. He enclosed the photographs and the medical certificate (see paragraph 6 above) with his application. The applicant’s request was joined to other requests concerning the alleged abuse of powers by the police officers on 6   May 2012. 11 .     On 20 March 2013 the Zamoskvoretskiy branch of the Investigation Committee dismissed several individual complaints and two official enquiries concerning the allegedly unlawful acts of the police in dispersing the rally on 6 May 2012, including the excessive use of force and arbitrary arrests. In his decision, the investigator referred to, inter alia , the first applicant’s description of the incident and statements by other persons, including some of the police officers. He further noted that according to an internal inquiry which had been conducted in the aftermath of the events at Bolotnaya Square, a police officer had called the first applicant, inviting him to come to the police station to give further information and identify the police officer responsible for the attack. The report on the above-mentioned inquiry was dated 8   June 2012 and stated that the applicant had refused to attend the meeting, stating that he could not identify the police officer concerned. 12 .     In the same decision, the investigator found that on 6   May 2012, in response to the breaking of a police cordon by some protesters, the police had started arresting persons who had been most actively involved in those acts. The investigator further concluded that the work of the officers who had been in charge of apprehending offenders had involved the use of force and special means of restraint, in so far as necessary, against persons who had been putting up resistance (see Frumkin , cited above, § 52). It was found that there were no elements of a crime in the acts of the police officers. 13.     The investigator did not examine the incident in respect of the first applicant, and his decision did not indicate that the first applicant had acted aggressively towards the police or shown any disobedience. The investigator’s decision confirmed that the applicant was not listed among the persons who had been apprehended that day. Complaints about the refusal to institute a criminal investigation 14.     The first applicant complained about the decision of 20 March 2013 to the prosecutor’s office and challenged it before the courts. He argued, in particular, that the investigator had not addressed his allegations and had made no attempt to identify the police officer concerned. The applicant claimed that by joining his application to those of others, the investigator had avoided assessing the particular incident of which he had complained. He also disputed what had allegedly been said during the telephone call in   June 2012 (see paragraph 11 above). 15.     On 17   May 2013 the applicant was sent a reply from the prosecutor’s office which briefly stated that there were no grounds for setting aside the decision not to open a criminal case. 16.     On 16   August 2013 the Zamoskvoretskiy District Court of Moscow (“the District Court”) dismissed the applicant’s complaint in respect of the decision of 20   March 2013 not to open a criminal case. The court considered that the investigator had made a thorough evaluation of the acts of the police that had safeguarded public order during the mass event. The judge further noted that the fact that the applicant had been admitted to hospital on 6   May 2012 had been reported on the same day and had triggered an internal inquiry. The allegations regarding unlawful acts by the police in respect of the applicant had not been confirmed during that inquiry. 17.     On 20   August 2013 the District Court dismissed a judicial complaint by the applicant concerning the prosecutor’s reply of 17   May 2013. The court considered that the applicant’s constitutional rights had not been violated, as he had had the opportunity to lodge a judicial complaint in respect of the decision of 20   March 2013. 18.     The applicant appealed against the decision of 16   August 2013, arguing, in particular, that the investigator had not provided a thorough assessment of his arguments, and that the investigator’s conclusions were not based on the material of the pre-investigation inquiry. 19.     On 1   November 2013 the Moscow City Court upheld the decision of 16   August 2013. In reply to the arguments raised by the applicant, the court stated that, at the pre-trial stage, a court had no jurisdiction to rule on the credibility of information which an investigator had to check in accordance with Article 144 of the Code of Criminal Procedure. 20.     On 11   November 2013 the Moscow City Court upheld the decision of 20   August 2013. Investigation into the alleged ill-treatment of the second applicant Request for a criminal investigation and refusals in respect of that request 21 .     On 29   October 2012 the second applicant asked for criminal proceedings to be instigated on account of her alleged ill-treatment by the police officers. As in the first applicant’s case, her request was joined to other requests concerning the alleged abuse of powers by the police officers on 6   May 2012. 22 .     On 7   December 2012, 25   October 2013, 22   May 2014 and 21   January 2016 the investigator refused to open a criminal investigation, on the grounds that the acts of the police did not constitute a criminal offence. In his decisions, the investigator set out the second applicant’s arguments concerning the incident and, without analysing the particular circumstances of her case, came to literally the same conclusions as those made in the first applicant’s case (see paragraph 12 above). 23 .     The decisions mentioned in the paragraph above were overruled by the prosecutor as premature and ill-founded on 23   October 2013, 25   April 2014, 27   November 2015 and 2   November 2016 respectively. Each time, the material in the case file was subjected to a further inquiry. On the last occasion the prosecutor noted in particular that during the next additional inquiry the investigator had to examine the DVD that the applicant had previously submitted. According to the second applicant, she was informed about the decisions not to open a criminal investigation following substantial delays; as regards the prosecutor’s decisions, on at least two occasions she learnt about those decisions during court proceedings, after she had challenged the decisions (see paragraph 24 below). Judicial complaints about the refusals to institute criminal proceedings 24 .     On an unspecified date in 2013, and on 23 September 2015 and 23   September 2016 the second applicant challenged the decisions not to open a criminal investigation before the courts. On 25   October 2013 the District Court dismissed the applicant’s claim, finding that the decision not to institute a criminal investigation dated 7   December 2012 was lawful. On 30   November 2015 and 10   November 2016 the District Court dismissed the applicant’s claims, as the investigator’s decisions of 22   May 2014 and 21   January 2016 had been overruled by the prosecutor before the court hearings had taken place (see paragraph 23 above). It does not follow from the materials available before the Court that the second applicant appealed against these decisions of the District Court. Claim in respect of non-pecuniary damage on account of allegedly ineffective investigation 25 .     On 21   June 2016 the second applicant claimed compensation for non-pecuniary damage allegedly caused by the investigating bodies that had dealt with her application and refused to institute a criminal investigation. She argued that considering her request jointly with those of others had been unlawful, and that the numerous remittals of the case for further inquiries revealed the deficiency of the work of the investigators. She further claimed that the failure to take the necessary measures to establish the circumstances of the incident had violated her rights and caused her psychological and physical suffering. 26.     On 28   November 2016 the Basmannyy District Court of Moscow rejected the applicant’s claim. The court found that the alleged defects in the work of the investigators had been remedied by the overruling of their decisions. The court further found that the applicant had provided no evidence indicating that the defendants’ acts had caused her any suffering and that they were at fault for the alleged negative consequences. 27.     On 30   March 2017 the Moscow City Court upheld the decision on appeal. 28 .     On 10 October 2017 a judge of the Moscow City Court dismissed a cassation appeal by the applicant. RELEVANT LEGAL FRAMEWORK 29.     For a summary of the relevant domestic law provisions governing pre-investigation inquiries and judicial review of the decisions of investigating authorities not to open a criminal case, see Lyapin v. Russia (no. 46956/09, §§   99-100, 24 July 2014). 30.     Section 20 of the Police Act (no.   3 of 7 February 2011, as in force at the material time) provided that police officers might use physical force, including combat methods, to prevent criminal and administrative offences, to arrest individuals who had committed such offences, and to overcome resistance to lawful orders if non-violent methods did not ensure compliance with responsibilities entrusted to the police. 31.     Section 21 of the Police Act laid down an exhaustive list of circumstances in which special means, including rubber truncheons, might be used. In particular, rubber truncheons might be used to repel an attack on civilians or police officers, to overcome resistance shown to a police officer, and to repress mass disorder and put an end to collective actions disrupting the operation of transport, means of communication and legal entities. The law prohibited, inter alia , hitting a person on the head with a rubber truncheon. Section 22 of the Police Act further stated that the use of special means to suppress an unlawful, but peaceful manifestation that did not disrupt the operation of transport, means of communication and legal entities was prohibited. 32.     For relevant international material on freedom of peaceful assembly, including guidelines on policing public assemblies see Frumkin (cited above, §   80). THE LAW JOINDER OF THE APPLICATIONS 33.     Having regard to the similar subject matter of the applications, the Court finds it appropriate to examine them jointly in a single judgment. ALLEGED VIOLATION OF ARTICLE 3 OF THE CONVENTION 34.     The applicants complained under Article 3 that they had been ill ‑ treated by the police during the dispersal of the rally on 6   May 2012, and that there had been no effective investigation following their ill-treatment complaints. Article 3 of the Convention provides as follows: “No one shall be subjected to torture or to inhuman or degrading treatment or punishment.” Admissibility 35.     In respect of the second applicant, the Government argued that she had lodged her Article 3 complaint outside the six-month period, which should be calculated from 10   November 2016, the date of the decision of the District Court (see paragraph 24 above). 36.     In reply, the second applicant argued that the decision of 10   November 2016 had not been the final decision in her case, and that the ineffective investigation had been of a continuous nature. 37.     The Court reiterates that normally the six-month period runs from the final decision in the process of exhaustion of domestic remedies (see Paul and Audrey Edwards v. the United Kingdom (dec.), no. 46477/99, 7   June 2001). In cases featuring a continuing situation, the six-month period runs from the cessation of that situation (see Ananyev and Others v. Russia , nos. 42525/07 and 60800/08, §   72, 10 January 2012, with further references). 38.     The Court has previously found that in the Russian legal system the power of a court to reverse a decision not to institute criminal proceedings is a substantial safeguard against the arbitrary exercise of powers by the investigating authorities. The Court has consistently required applicants to lodge judicial appeals in respect of investigators’ decisions not to institute criminal proceedings (see Trubnikov v. Russia (dec.), no.   49790/99, 14   October 2003, and Belevitskiy v. Russia , no. 72967/01, §§ 54-67, 1   March 2007). 39.     The Court observes that in the second applicant’s case there were four decisions not to open a criminal investigation. The second applicant sought judicial review of those decisions, but her applications were dismissed, as the relevant decisions not to investigate had been quashed by the prosecutor (see paragraphs 22-24 above). On 10   November 2016 the District Court issued such a dismissal (the most recent one available to the Court), which stated that there was no subject to be examined by that court, since on 2   November 2016 the prosecutor had quashed the decision not to institute criminal proceedings and requested an additional inquiry. The Court has not been provided with any documents showing the results of the subsequent pre-investigation inquiry, which appears to be ongoing. The Court therefore cannot agree with the Government that the decision of 10   November 2016 constitutes the final decision for the purpose of calculating the six-month period as regards the second applicant’s ill ‑ treatment complaint. 40.     The Court further observes that the second applicant lodged her complaint with the Court approximately ten months after the above ‑ mentioned decision by the prosecutor to send the file for an additional inquiry. During this time, she could reasonably have expected some progress in the investigation, as the prosecutor had explicitly ordered the examination of the DVD featuring the incident. During the same period, the second applicant received and challenged the rejection of her civil claim for compensation for non-pecuniary damage (see paragraphs 25-28 above). 41.     In view of the foregoing, the Court considers that the second applicant complied with her duty of diligence and did not delay unduly in lodging her application before the Court (see Mocanu and Others v.   Romania [GC], nos. 10865/09 and 2 others, §§ 264-69, ECHR 2014 (extracts)). It therefore dismisses the Government’s preliminary objection in respect of her complaint under the substantive and the procedural limbs of Article 3 of the Convention. 42.     The Court notes that the applicants’ complaints under Article 3 of the Convention are neither manifestly ill-founded nor inadmissible on any other grounds listed in Article   35 of the Convention. They must therefore be declared admissible. Merits Submissions by the parties 43 .     As regards the first applicant, the Government disputed when and how his injuries had occurred. They further submitted that the information they had received from the hospital concerning his injury had not been sufficient to start an investigation without a request from the applicant himself. They argued that the fact that he had delayed in lodging his application for over one month (see paragraph 10 above) had impeded the pre ‑ investigation inquiry, as it had been too late to conduct an expert examination and question him and witnesses. They argued that there had been no violation of Article 3 in respect of the first applicant. 44 .     As regards the second applicant, the Government submitted that the second applicant’s allegations of ill-treatment had not been confirmed during the pre ‑ investigation inquiry. They considered that she had not made an arguable claim, and therefore the authorities had not been under an obligation to start a criminal investigation. 45.     The first applicant maintained his complaint. He submitted that when he had received the phone call from the police in June 2012 he had confirmed that he had been beaten by a police officer. He further submitted that there had been an expert examination confirming that he had sustained an injury. He argued that the date of the injury could not be disputed, since that was apparent from the medical certificate and the photographs. He also argued that the pre-investigation inquiry had been too slow. 46.     The second applicant maintained her complaint. She claimed that the State authorities had been aware that the police had used disproportionate force against the participants in the rally on 6   May 2012. However, they had chosen to ignore that fact. With reference to the findings in Frumkin v.   Russia (no. 74568/12, §§   128-30, 5   January 2016), she reiterated that responsibility for the violent clashes that had erupted between the police and the protesters on that day at Bolotnaya Square lay with the authorities. The Court’s assessment (a)    Alleged lack of an effective investigation (i)   General principles 47.     The Court refers to the general principles summarised in Bouyid v.   Belgium [GC] (no. 23380/09, §§ 114-123, ECHR 2015). 48 .     In particular, where a serious allegation of ill-treatment under Article   3 is made out, the authorities have an obligation to take action as soon as an official complaint has been lodged. However, even in the absence of an express complaint, an investigation should be undertaken if there are other sufficiently clear indications that torture or ill-treatment might have occurred. The authorities must act of their own motion once the matter has come to their attention (see, mutatis mutandis , Members of the Gldani Congregation of Jehovah’s Witnesses and Others v. Georgia , no.   71156/01, § 97, 3 May 2007, and Al-Skeini and Others v. the United Kingdom [GC], no. 55721/07, § 165, ECHR 2011, with references therein; see also Velev v.   Bulgaria , no. 43531/08, § 60, 16 April 2013, for an example of a case where ill-treatment took place in the presence of police officers). 49.     The Court has stressed that a proper response by the authorities in investigating serious allegations of ill ‑ treatment at the hands of the police or other similar agents of the State in compliance with the Article 3 standards is essential in maintaining public confidence in their adherence to the rule of law and in preventing any appearance of collusion or tolerance of unlawful acts (see, among other authorities, Gasanov v. the Republic of Moldova , no.   39441/09, §   50, 18   December 2012; Amine Güzel v. Turkey , no.   41844/09, §   39, 17   September 2013; and Mesut Deniz v. Turkey , no.   36716/07, § 52, 5 November 2013). 50 .     When the authorities resort to the use of force, there should be some form of independent monitoring of the action taken, including the issue of its proportionality, in order to ensure accountability for the force used. In ensuring such accountability, it must be verified whether the operation was properly regulated and organised in such a way as to minimise to the greatest extent possible any risk of serious bodily harm to individuals (see Muradova v. Azerbaijan , no. 22684/05, § 113, 2   April 2009, with references therein). 51.     In Lyapin v. Russia (no. 46956/09, §§   128-40, 24   July 2014) the Court summarised its approach in previous police ill-treatment cases against Russia where a “pre ‑ investigation inquiry” had been the only procedure employed by the investigating authority. The Court concluded that the mere fact that an investigating authority had refused to open a criminal investigation into credible allegations of serious ill ‑ treatment in police custody was indicative of the State’s failure to comply with its obligation under Article   3 of the Convention to carry out an effective investigation. (ii)   Application of the principles to the present case 52.     The Court observes that the first applicant and the second applicant lodged their criminal complaints with the investigating authorities on 23   June 2012 and 29   October 2012 respectively (see paragraphs 10 and 21 above). Both applicants complained that they had been injured by the police on 6   May 2012 during the dispersal of the rally at Bolotnaya Square. In particular, they stated that certain police officers had hit them on the head with a rubber truncheon, which was directly prohibited by law. In support of their allegations, the applicants submitted medical documents attesting to their injuries, along with photographs and video material. The Court has no doubt that from the moment that evidence was submitted, each applicant had an arguable claim of ill-treatment. 53.     However, the Court takes note of the Government’s argument that the first applicant delayed in lodging his criminal complaint, rendering the ensuing pre-investigation inquiry difficult (see paragraph 43 above). The Court further notes that the second applicant lodged her criminal complaint even later, and takes into account her submissions that the authorities persistently ignored the widely reported fact that there had been police brutality during the dispersal of the political rally concerned (see paragraph   46 above). The Court therefore considers that in the present case it has to establish, inter alia , whether the authorities were required to start the investigation of their own motion and irrespective of the applicants’ official criminal complaints. 54 .     The Court has previously found, in a similar context, that a large ‑ scale confrontation between protesters and law-enforcement officers involving violence on both sides called for particularly thorough scrutiny of the actions of not only those protesters who had acted violently, but also those of the law-enforcement authorities (see Muradova , cited above, §   114). 55.     When clashes occurred at Bolotnaya Square the police officers used force and special equipment in respect of some of the participants in the rally. According to the report prepared on the same day by the Deputy Chief of the Public Order Directorate of the Moscow Department of the Interior, more than twenty police officers and military servicemen were injured during the security operation at the public assembly. A criminal investigation was immediately opened into offences of mass disorder and violent acts against the police (see Frumkin , cited above, §§   43-44). Thus, the authorities, having become aware of violent clashes between the police and the protesters, proceeded to investigate the violent acts committed by the protesters in respect of the police officers. In the circumstances, it was sufficiently clear that there might also have been ill-treatment of the participants in the public event. According to the case-law cited above (see paragraph 48 above), that should have triggered an official investigation, even in the absence of individual complaints lodged by the participants in the rally. 56.     The Government asserted that the events at Bolotnaya Square had been the subject of a large-scale domestic inquiry resulting in criminal proceedings in which the organisers had been convicted of mass disorder and a number of other individuals had been convicted of violent acts against the police. They submitted that overall the establishment of the facts and the assessment of those facts by the domestic investigating and judicial authorities had been thorough and correct. Having previously examined the criminal proceedings referred to by the Government, in particular those against the organisers, the Court accepts that they involved the establishment of some of the relevant facts (see Razvozzhayev v. Russia and Ukraine and Udaltsov v. Russia , nos. 75734/12 and 2 others, § 137, 19   November 2019). However, the purpose of those proceedings was not to attribute responsibility to the State or police officers personally for the clashes and the consequent damage. Police officers’ participation in those proceedings was limited to testifying as victims or witnesses in respect of the mass disorder perpetrated by the protesters, and the courts did not scrutinise their conduct vis-à-vis the protesters. 57.     Turning to the present case, the Court observes that in addition to being aware of the general situation, the authorities received several specific complaints of ill-treatment, as well as information about the applicants’ injuries which came from other sources. An ambulance was called for the second applicant directly to the site of the events (see paragraph 8 above). The Government confirmed that on 6   May 2012 the police had been informed by the hospital about the first applicant’s injuries, but that information from the hospital had not been considered sufficient to proceed with the investigation. The authorities conducted an internal inquiry, which did not confirm the allegation of police ill-treatment (see paragraph 11 above), but they did not disclose the particular steps taken within that procedure, apart from a telephone call to the first applicant. 58.     It follows that immediately after the events the investigating authorities were fully capable of identifying and promptly questioning both applicants, and taking independent, tangible and effective investigative measures aimed at: verifying the causes of their injuries; identifying the culprits, for example by obtaining a list of the police officers who had been involved in the operation; questioning the police officers involved; and identifying and questioning other witnesses and medical personnel who had dealt with the applicants. The investigating authorities did none of this as soon as the matter came to their attention. 59 .     Furthermore, it does not appear that the authorities made a serious attempt to verify the applicants’ allegations of ill-treatment when they lodged their formal criminal complaints. In the first applicant’s case, a pre ‑ investigation inquiry lasting nine months resulted in a decision of 20   March 2013 not to open a criminal case. From the text of that decision, it cannot be discerned that any measures were implemented to establish the circumstances of the alleged assault, apart from the collection of explanations from the applicant. In particular, it does not appear that the investigator examined the medical certificate and photographs submitted by the first applicant (see paragraphs 11-12 above) before rejecting his complaint. 60 .     In respect of the second applicant’s allegations, four decisions not to open a criminal investigation were issued, but criminal proceedings were not instituted. The Court has previously held that the mere carrying out of a pre ‑ investigation inquiry, when this is not followed by a preliminary investigation, is insufficient for the authorities to comply with the requirements of an effective investigation into credible allegations of ill ‑ treatment by the police under Article 3 of the Convention (see Lyapin , cited above, §   136, and, more recently, Samesov v. Russia , no. 57269/14, §   51, 20 November 2018). The same holds true for the present case. The decisions dispensing with a criminal investigation in the second applicant’s case were quashed by the prosecutor, with reference to various flaws. However, during the resumed inquiry, the authorities made no genuine attempt to establish the circumstances of the attack on the second applicant and identify the perpetrator (see paragraphs 22-23 above). Moreover, it appears that the applicant learned about the prosecutor’s interventions only when she complained to the courts about the refusals to open a criminal investigation (see paragraph 23 above). That inquiry therefore did not constitute an effective investigation into the second applicant’s credible assertions of ill ‑ treatment. 61.     In view of the foregoing, and having regard to its case-law, the Court concludes that in the present case the authorities failed to carry out an effective investigation. There has accordingly been a violation of Article 3 of the Convention under its procedural head in respect of both applicants. (b)    Alleged ill-treatment (i)   General principles 62.     The Court reiterates that Article 3 of the Convention enshrines one of the most fundamental values of a democratic society. It prohibits in absolute terms torture and inhuman or degrading treatment or punishment, irrespective of the victim’s conduct (see, among other authorities, Labita v.   Italy [GC], no.   26772/95, § 119, ECHR 2000-IV). In respect of a person who is deprived of his or her liberty, or, more generally, is confronted with law ‑ enforcement officers, any recourse to physical force which has not been made strictly necessary by his or her own conduct diminishes human dignity and is an infringement of the right set forth in Article 3 (see Bouyid , cited above, §§ 100-01). Specifically, when authorities resort to the use of force for the purpose of quelling mass unrest, such force may be used only if it is indispensable, and it must not be excessive (see Muradova , cited above, §   109). 63.     Allegations of ill-treatment must be supported by appropriate evidence. In assessing this evidence, the Court has generally applied the standard of proof “beyond reasonable doubt”. However, such proof may follow from the coexistence of sufficiently strong, clear and concordant inferences or of similar unrebutted presumptions of fact (see Ireland v. the United Kingdom , no. 5310/71, § 161, 20 March 2018). As to the burden of proof in relation to the alleged ill-treatment inflicted in the context of policing a demonstration, the Court found that the applicants were required to make a prima facie case that their injuries had resulted from the use of force by the police before the burden is shifted to the Government to refute those allegations (see Muradova , cited above, §§ 107-08). When the cause of injury was in dispute between the parties the Court attached special importance to the fact that the injury was sustained while the applicant was within the area in which the law ‑ enforcement authorities were conducting an operation during which they resorted to the use of force for the purpose of quelling mass unrest (ibid., § 109). To discharge the burden of proof the Government had to provide a satisfactory and convincing explanation as to the cause of the applicant’s injuries (ibid., § 112). 64.     The Court has found that in cases where it cannot be said that the police have been called upon to react without prior preparation (see   Rehbock v. Slovenia , no.   29462/95, § 72, ECHR 2000 ‑ XII), they may be expected to show a degree of patience and tolerance before attempting to disperse a crowd which does not present a danger to public order and is not engaging in acts of violence. The Court has previously found violations of Article 3 of the Convention where police officers failed to show the required degree of tolerance and restraint when dispersing peaceful gatherings (see, for example, Biçici v. Turkey , no. 30357/05, §§ 35-36, 27   May 2010). (ii)   Application of the principles to the present case 65.     It is not disputed between the parties that both applicants participated in the political rally on 6   May 2012. The event had been approved by the city authorities as a march followed by a meeting at Bolotnaya Square which was supposed to end at 7.30 p.m. The march was peaceful and took place without any disruptions, but when the marchers arrived at Bolotnaya Square it became clear that barriers installed by the police had narrowed the entrance to the meeting venue, allegedly restricting the space allocated for the meeting. To control the crowd, a police cordon forced the protesters to remain within the barriers. There were numerous clashes between the police and protesters. At 5.30 p.m. the police ordered that the meeting should be terminated early, and they began to disperse the participants. It took them about two hours to clear the protesters from the square. 66.     In previous cases concerning the same events the Court found that the authorities had failed to discharge their positive obligation under Article   11 of the Convention to ensure the peaceful conduct of the assembly, to prevent disorder and to secure the safety of all the citizens involved (see Frumkin , cited above, § 130). The Court also concluded that the early termination of that meeting had not been inevitable, and that the information about the termination had not been effectively transmitted to the participants in the march (ibid., §§   36 and 133). As regards the methods used to disperse the assembly at Bolotnaya Square, the Court refrained from making a general assessment of the police’s conduct, reserving its assessment to an examination of the specific allegations in each particular case (ibid, § 134). In several related cases it found that the applicants’ arrest at the site of the venue had violated Article   11 of the Convention (ibid., §§   138-40; see also Aristov and Gromov v. Russia [Committee], nos.   76191/12 and 5438/13, §§ 58-62, 9 October 2018; Asainov and Sibiryak v. Russia [Committee], nos. 16694/13 and 32701/13, §§ 50-53, 4   December 2018; and Zinovyeva v. Russia [Committee], no.   69272/13, §   53, 8 January 2019). However, the Court has not yet dealt with individual complaints like the present ones, relating to ill-treatment by police during that event. 67.     In the present case, the Government did not contest that the applicants had sustained injuries, or that the police had applied force at Bolotnaya Square on that day. At the same time, in their observations, they can be understood as denying that the injuries were inflicted by the police during the operation on 6   May 2012 (see paragraphs 43-44 above). In this regard, the Court notes that during the domestic pre-investigation inquiries the questions of exactly when and how the injuries had been inflicted were not addressed. The applicants submitted medical certificates, photos and/or videos, as well as explanations as to how their injuries had resulted from police actions. The decisions refusing to institute a criminal investigation do not contain any detailed analysis of the submitted material, refer to any other material in respect of the incidents involving the applicants, or put forward an alternative explanation for their injuries (see paragraphs 59-60 above). 68.     The Court further notes that the Investigation Committee’s decision of 20 March 2013 and the subsequent decisions (see paragraphs 12 and 22 above) stated that the police had legitimately used force when arresting the protesters who had acted unlawfully and shown resistance Although the applicants were not among those arrested or accused of acting violently, the Court considers that the general conclusions of the investigators can be understood as implying that force was also used by the police in respect of the applicants. 69.     In the light of the foregoing, and noting the applicants’ consistent and detailed explanations about the origin of their injuries which were supported by medical certificates, photographs or video material, the Court considers that both applicants have made out a prima facie case that the injuries described in the medical certificates were inflicted by the police during the dispersal of the political rally on 6   May 2012. Further noting the lack of an effective investigation into the applicants’ allegations, and consequently the absence of any alternative and plausible explanations for the causes of the applicants’ injuries provided by the Government, the Court concludes that the injuries described in the medical certificates were inflicted by the police during the dispersal of the political rally on 6   May 2012. 70.     As in previous similar cases, the Court attaches particular weight to the fact that the injuries were sustained while the applicants were within an area in which law-enforcement authorities were conducting an operation during which they resorted to the use of force for the purpose of quelling mass disorder. While the use of force in such circumstances is not prohibited, it has to be indispensable and not excessive (see Muradova , cited above, § 109, with references therein). 71 .     In this regard, the Court notes that at no stage in the domestic proceedings or the proceedings before the Court has the applicants’ peaceful conduct during the assembly been called into question. The use of force against them was therefore not warranted by their own conduct, and thus diminished their dignity. 72.     The Court finds that the present case involved degrading treatment. 73.     There has accordingly been a violation of Article   3 of the Convention in its substantive limb in respect of both applicants. (c)    Conclusion concerning the alleged violations of Article 3 74 .     The Court has established beyond reasonable doubt that on 6   May 2012 the police used force against both applicants during the dispersal of the assembly at Bolotnaya Square, and that they sustained injuries as a result. It has further held that the recourse to physical force was not made strictly necessary by the applicants’ own conduct, nor had it been indispensable use in the context of quelling mass di