As a longtime peace and libertarian activist, I was very upset when in the  year 2000 "progressive activists" began to condone and even promote the "black bloc" "diversity of tactics" philosophy, basically doing property destruction and fighting with the cops for publicity so the news would FINALLY cover your anti-globalization or whatever protests.  This has evolved into really serious violence to shut down speakers, bully opponents and even commit arson. Yet even some of my pacifist friends will act like "Oh, they didn't do anything bad". Just in denial.  Of course, violence begets violence and these alt-right guys are even scarier.  It's time to dial back the machismo on both sides, please! Violence begets violence, and the state is the number one organizer of violence and war.