Leftist Noam Chomsky has already said that he doesn't agree with Antifa punching nazis like Richard Spencer because when things get physical, the most brutal people win. And that's "not us" (the left). Noam Chomsky acknowledges that right-wing militias would destroy Antifa in a fight.

Noam Chomsky is kind of more like an old-school leftist rather than the new wing of Chapo Trap House/Breadtube/Serfs/Justice Democrats leftists who advocate assaulting and doxxing people on the "far-right". Which is why I at least have a degree of respect for Noam Chomsky. I can imagine a cordial debate with Noam Chomsky even if we agree to disagree.