354_46 substantive_scope 46. As to whether the applicants personally could rely on the provisions of Article 11, the Court recalls that peaceful participants in a demonstration marred by isolated acts of violence committed by other participants do not cease to enjoy the right to peaceful assembly (see Kudrevičius and Others v. Lithuania [GC], no. 37553/05, § 94, ECHR 2015, and Ziliberberg v. Moldova (dec.), no. 61821/00, 4 May 2004). It does not transpire from any submissions that the applicants were among those responsible for the initial acts of aggression which contributed to the deterioration of the assembly’s originally peaceful character. As regards breaking through the police cordon imputed to the applicants, they denied having pushed through the cordon, and even if the applicants found themselves beyond the cordon, there is no evidence that it had been the result of their deliberate effort. According to the material in the case-file, the police cordon had collapsed because of the pressure of the crowd which had built up owing to the unexpected and unannounced change by the authorities of the venue layout (see also Frumkin, cited above, §§ 113-16 and §132). Apart from that, the applicants’ behaviour remained strictly peaceful. The Court therefore considers that the applicants enjoyed the protection of Article 11 in the present case.