And, sorry, but no, simply saying things one does not agree with does not justify in engaging in unprovoked violence. This is directed at the recent events in Berkeley where it appears that masked and self-identified "anarchists," (not "antifa members" as Hannity called them), engaged in violence that was not in self-defense. I am not all that happy about people shutting others down from simply speaking publicly, but I am completely opposed to doing this by means of unprovoked violence (self defense as happened in Charlottesville is a different matter). This applies to what happened at Middlebury College as well.
There is a very fine line here, but progressives must not fall into the pit of saying that unprovoked violence is acceptable because "those people are bad." Sorry, not acceptable. Peaceful counterprotesting as we saw in Boston is the way to go. Period.