Did this hate group not start in Europe?
Same old faces. Just a new name.
Yes it did. They were commies in Germany in the 1940s
They are the American branch of a far left European group, originally a pre World War III violent Communist terror group in Germany, is my understanding. Essentially a leftwing version of the Nazis. Then parts of their group like the Baader Meinhof Gang killed a lot of people in Germany in the Sixties and Seventies.
https://en.wikipedia.org/wiki/Antifaschistische_Aktion