> they beat up Vincent Canfield
They dragged him out because he refused to leave. He was being quite aggressive and kept resisting.
Would it have been more appropriate to call the police? Sure. But I can definitely see how they would feel threatened by him.
fwiw, I had trouble watching one of the presentations linked here last week so I went to YouTube and watched it there.
Evangelizing/educating is sort of like bank robbery I guess. There's like an old joke where someone asked a famous bank robber why they robbed banks and they said "because that's where the money is"... so maybe there maybe people who don't know they are interested in CCC who they might be able to reach.
Looks like CCC has serious problems in its administration (they beat up Vincent Canfield) https://twitter.com/gexcolo/status/1214261610338037761 but imo that does not take away anything from the presenters/presentations.