Motebello and police provocateurs

Ok, this is fucking crazy and I didn't believe it until I saw the video. There are three "anarchists" at the Montebello protests trying to stir up shit - holding rocks, advancing on the police line, etc. A union leader, Dave Coles, is trying to disarm the situation and get the guys to piss off. Some other protesters accuse the three men of being police "provocateurs" - trying to cause trouble to give the police an excuse to move in. After some scuffling Coles gets pissed off and tries uncovering the men's bandannas. The men are then absorbed into the police line and "arrested" and taken away. It seems pretty obvious to me that the men were in cahoots with the cops.