This short video is interesting to see how the left operates in a democratic environment.
An individual on our side decides to go to Occupy San Diego and do some activism and talk to the people that gathered in the street.
At the beginning everything seems fine he looks harmless and is talking about a subject that is on the leftist agenda "arrest the banksters" so he is allowed to speak (he can have a few minutes of free speech and talk to the masses).
He starts talking about the FED and the leader of the red hordes (on the left side of the screen in a black shirt with a golden hammer and sickle) gets alerted and comes closer to access all the factors in play but he let him go on and at the end they applauded him.
Afterwards John Friend starts talking about an second issue clearly more controversial for the lefties "Israel" and "9/11". They immediately start booing him here and there without much conviction. John continues his speech and the red commissar crosses his arms giving a sign to the other communists to shut him up with their screams and noise (a form of political censorship).
John starts to feel the hostility he probably wasn't expecting this reaction from the audience and don't understand why they are reacting this way but he continues a bit more and hopes to debate and explain his position. The reds aren't happy with that so a blonde woman tries to remove him and his "9/11 was an inside job" poster physically from the stage (when the censorship doesn't work they use violence).
These are some of the tactics that the left uses to subvert and manipulate public meetings.