Ключевые слова: 2010, canada, chanting, city, close, crowd, democracy, demonstration, downtown, economy, event, expression, fight, finance, financial, force, g20, gear, group, helmet, human, international, male, march, nation, national, news, officer, police, policemen, politics, power, protest, protestors, public, rally, riot, safety, security, shield, singing, slogan, street, students, summer, summit, teen, toronto, violence, world,