Protest was over Security and Prosperity Partnership of North America.

I can't say that I understood all that was going on, but it certainly looked like what they were saying happened. The police tried to instigate a riot so that they could then step in and assault the protesters. There should be repercussions over that.

The police have confirmed that the masked men were in fact undercover officers.

good catch. this goes on all the time, but seldom on video.
peace
faberglas