There are two things you should read.

Ur-Fascism by Umberto Eco

The Authoritarians by Dr. Bob Altemeyer

To summarize, they do not use any genuine definition of fascism or any other word they wield as a pejorative. Words are weapons that mean whatever they want them to mean. At the same time, the fascist/authoritarian control scheme requires the nurturing of a fear of violence. This fear is irrational, but at the cycle continues and escalates to real violence - particularly among radicalized rightists - it is used to reinforce the fears, which are carefully directed toward the desired out-groups. For example, jews, minorities, immigrants, queer people, and “leftists.”

To summarize further, they are terrorists.