Why is Antifa considered extreme?
Antifa is a very moderate centrist organization with no extreme views. Everything they support comes from a Human Resources handbook at any Fortune 500 company. For example "Do not say anything offensive or we will fire you".
Personally I think corporations have too much power. I am afraid liberals want corporations to have even more power. The idea of "social credit" is popular in China where if you hold certain views you are not allowed to do business.