The thing is holding up signs in approved free speech zones doesn't work anymore, and even that is getting criminalized so we're approaching the point where if you're going to show up at all you might as well throw down. I think there's a little too much eagerness to get aggressive at protests, but Seattle in 99 and Occupy did draw a lot of people to the Left even if they didn't accomplish much concrete, and the Left needs numbers because that's the only advantage it can possibly have. People attacking neo-confederates defending monuments that are already going to be torn down are being stupid, but I don't think punching Richard Spencer or egging Marie Le Pen was, and to the extent that property damage during a protest makes whatever was being protested not worthwhile to the people that benefit from it I don't think that is either.Every time I see Antifa on the news, I think about the president and wonder when our Kent State is going to go down.