@garbados Mostly because of a pattern of behavior. I've seen too much violence associated with people who are part of a local organization claiming the "antifa" title. Not to mention they also seem a bit over the top in their estimation of what is or is not fascism. Usually anything that they disagree with socially or politically they see as fascist.

With that said there is legitimate fascism that is worth speaking out against and I have no issue with protesters who speak out against such cases.