Just because a party calls itself something nice doesn't mean they are. The NAZI, as far as I know, weren't really socialists. So too antifa. Antifa uses physical violence against peaceful assholes. Let neo-nazi parade themselves with their tiki torches. Make fun of them while and after they do it. Show them love if they want to repent. Don't punch them in the face with a padlock.
It is from Nationalsozialistische Deutsche Arbeiterpartei (English: National-Socialist German Workers' Party) [1] which is another interpretation of socialism.
There's a reason why free speech does not apply to fascist movements in most countries and it's illegal to use its symbols: https://en.wikipedia.org/wiki/Paradox_of_tolerance
Also, equating authoritarian systems with an anti-authoritarian movement literally named "anti-fascist action" is a bit ridicolous.