@raphjd sounds correct, for Antifa lineage in USA since 2000.
Antifa started in Weimar Germany, as street-terrorists of German Communist Party. "Antifaschistische Aktion"
Antifa was mad at Nazis (fascists) only becuz they won. Nazis & Antifa were very alike, both totalitarian-socialist.
Their street gangs battled. Issue was, "our gang vs. yours" & that Nazis wanted to be strictly German while Antifa were aligned to Moscow.
U know..... .....Antifa was RUSSIAN influence 👽 They thought it OK, back then 🤣 🤣