OK, I live in this area. Please don't ascribe the actions of immature anarchists to those who are peaceably protesting liberals. Protest has a very long history in the U.S.; we were founded on it.
These (few) jerks almost always mask themselves because they get a kick out of destruction, period. We have had many peaceful marches over the last year, for example, over the Black Lives Matter issue - UNTIL the masked anarchists started causing trouble at the end of a march. Exact same tactics: breaking windows, throwing rocks, burning trash cans.
When they are arrested, almost 100% of them DO NOT LIVE in the city in which they are trashing. Some of them were coming from 30-50 miles away. Because of the anarchists' actions, the BLM organizers called off any further marches because there was no way to keep these a$$$$ away.
I can assure you that when you live in a city, even as a student, you realize than vandalizing where you live and work, is stupid. We are liberals, but that does not mean we're idiots.
As for the "drama" at UCB, I happen to agree that Yiannopolous should be allowed to speak. I don't agree with him, but yes he has the right to speak in public.
Ian Miller, if you look at his posts, is an overprivileged Caucasian jerk. He isn't interested in righting injustices or promoting racial/social equality; he's a "black bloc" timewaster, a student and by no means a permanent resident or homeowner of Berkeley. The UCB police and FBI are already investigating him, and pretty much everyone (yeah, we all voted for Hillary too) hopes he gets the book thrown at him.