Navalnyy v. Russia, ECtHR, Judgment of 15 November 2018, paras. 45, 137 (“An interference with freedom of assembly in the form of the disruption, dispersal or arrest of participants in a given event may only be justifiable on specific and averred substantive grounds, such as serious risks referred to in paragraph 1 of section 16 of the Public Events Act,” i.e., “’the emergence of a genuine threat to citizens’ lives or health, and to the possessions of physical or legal persons.’”).