I like to take a “DUmpster dive” at least once a day, to see what they are talking about. They are now completely irrational. The blind hatred, the humorlessness, the talk of violence. They have come to believe their own propaganda.
To continually say one thing about a group of people and to actually believe/know something totally different creates a condition called "cognitive dissonance". There is something about the human brain that prevents a situation like that from existing very long. We are not always rational, but humans rationalize all the time. In a case like this, the rationalization is "I say it all the time. I hear it from people I like and respect all the time. Therefore, this horrible statement about people I disagree with must be true.
I've gotten to the state where it really doesn't matter what people say about me because I know who I am. When I hear hateful language, it's primary effect on me is to identify the people I need to protect my family from - whatever form that requires.