Antifa started during the Hitler era in Germany in the 1930’s and were really anti-fascists back then. This new Antifa is actually fascist as you stated.
If you’ve heard of stolen valor you know how serious it is when someone steals the valor someone else earned. These fakes should be belittled and shunned in society for their crime of stealing valor others earned and what they are making a mockery of.
Those antifa were antifacom, Antifa Communists. These are antifafa. I like the way that sounds, and it will drive them crazy.