These people are certifiable.
The way to del with these fools is neither violence nor insults. It’s to attend their rallies, be polite, take lots of good pictures that clearly depict their faces for possible future identification, and, then, widely publish the pictures to show what total fools they are and how few of them there are.
Just remember the leftist riots in Chicago that shut down a Trump rally just before the IL Republican primary—all the rioters did was assure Trump a massive victory that would have been a lot smaller, absent the riots.