641_11 substantive_scope 11. The Court refers to the principles established in its case-law regarding freedom of assembly (see Kudrevičius and Others v. Lithuania [GC], no. 37553/05, ECHR 2015, with further references) and proportionality of interference with it (see Oya Ataman v. Turkey, no. 74552/01, ECHR 2006-XIV, and Hyde Park and Others v. Moldova, no. 33482/06, 31 March 2009).