"Antifa" is not just "anti-fascism". It is short for "Antifaschistische Aktion" and is an umbrella term for loosely related groups of extremist Anarchists/Communists who share the same symbolism, rethoric and tactics.
This is the definition of the word, no matter how much lefists try to whitewash the term and shift the overton window.
This is the definition of the word, no matter how much lefists try to whitewash the term and shift the overton window.