Ключевые слова: action, armed, authority, banner, control, crisis, crowd, election, event, forces, freedom, government, group, leader, meeting, military, nightstick, occupy, officer, organization, parade, people, placard, police, political, politics, power, protestor, protests, rally, rebellion, revolution, riot, russia, security, shield, sign, single, social, staff, street, surveillance, traffic, uniform, variation, vest, work,