TY JOUR TI PREVENTION OF CRIMES AND ADMINISTRATIVE OFFENCES COMMITTED DURING MASS EVENTS KW crime; offenses; mass events; mass riots; hooliganism; prevention; suppression of crimes; law enforcement agencies JO Bulletin of the Kazan Law Institute of MIA Russia AU Shalagin, A.E. AU Idiyatullov, A.D. PY 2025 IS 16 PB Kazan law institute Ministry of Internal Affairs Russian Federation