He'll probably do this canceling a couple more times to build it up, then finally schedule something, and they will all show up to it, like teenage boys who haven't had sex in 7 months, triple enthuzed which for them mens out of control, and by their behavior, and how he handles them, they will make his point for him.
Perhaps, but looking at the videos last night, that looked like a riot was about to start. Muslims, blacks & hispanics - it would have turned ugly very fast.