That was just one example. The Berkley professor in that example was arrested for for felony assault of his "hostile enemy" that he picked out of a crowd because the guy had a Trump sign / shirt / hat.

If you feel that everyone who supports the president is a hostile enemy advocating for the ethnic cleansing of your fellow Americans, you should probably start getting your news from some place other than Google News / John Oliver / etc. Attacking people with opposing views is LITERALLY the definition of facism, which they claim to be against.