Thousands of people took to the streets in Toronto, Canada to demonstrate against the twin G8 and G20 summits. Violent protesters caused riots according to the police, but one has to question from where the violence came from. Agent provocateurs have been used many times in the past to incite violence amongst peaceful protesters, so that the police can move in arrest people and break up the protests even in free speech zones. The main stream media is also quick to report on the violence discrediting the 10s of thousands who are there without violence.
Police and security services have infiltrated black blocs with agents provocateurs. Allegations first surfaced after several demonstrations. At the 2001 G8 summit in Genoa, amongst the many complaints about the police there was mention of video footage in which "men in black were seen getting out of police vans near protest marches". In August 2007, Quebec police admitted that "their officers disguised themselves as demonstrators." However, they were easily recognized by the genuine protesters as police, as they were still wearing their police-issue footwear.