Violence comes from the Left.
And liberals have been taught to feel very comfortable acting out with it on political opponents in public - especially on university campuses.
But now that Trump has begun equally applying the law, and universities face punishment for not supporting everyone's rights to freedom of speech, most schools are not reacting as they did in the past.
There is a natural lag between this paradigm shift and the behavior of these uneducated, intolerant oafs.
Link: https://www.foxnews.com/us/university-fires-turning-point-usa-table-flipper-from-teaching-assistant-role-after-campus-outburst