Commies Rally in San Francisco

I recently made some claims that many of the organizers of the anti-war rallies were really revolutionary communists and totalitarians. I was challenged by Christina to provide sources. I did so, but she was not satisfied. Well, here is a report from inside the most recent rally in San Francisco. If this doesn't prove my point to you lefties who are in denial about this, nothing will. Upon this report, I rest my case.