341_97 personal_scope 97. It is important for the public authorities, moreover, to show a certain degree of tolerance towards peaceful gatherings, even unlawful ones, if the freedom of assembly guaranteed by Article 11 of the Convention is not to be deprived of all substance (see Oya Ataman, cited above, §§ 37 and 39). The limits of tolerance expected towards an unlawful assembly depend on the specific circumstances, including the duration and the extent of public disturbance caused by it, and whether its participants had been given sufficient opportunity to manifest their views (see Cisse v. France, no. 51346/99, §§ 51-52, ECHR 2002-III; Éva Molnár v. Hungary, no. 10346/05, §§ 42-43, 7 October 2008; Navalnyy and Yashin v. Russia, no. 76204/11, §§ 63-64, 4 December 2014; and Kudrevičius and Others, cited above, §§ 155-57 and 176-77).