Two different scenes, man. No need to provoke a riot at a sports event. Alcohol will do that. And that was not a protest. It was a riot.
Discrediting protestors the G8/G20 is just good politics for the ruling class. Besides, you show me the bunk in those videos. There is a lot more on Youtube and even more on Google.
Come on Cliffy... you can't really believe that the G8/G20 rioters are police because they wear black boots and clothes. Seriously?
When I lived in Montreal, the cops were always starting riots. One of the most notorious was the La Press strike around 1969.
And going back even farther, there was the attacks on unions in the 30s and 40s.
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I am not familiar with the La Press strike but I imagine the police were trying to enforce the law and the strikers fought back? So technically the Police started the riot?