Our society is not without faults. Our domestic and foreign policies are also often flawed. To correct failings, we need people who point them out, however unpopular that may be. We should be enabling a wide framework of public discourse, not seeking to silence people. To date, we haven’t quite reached the level of hysteria of 1950s McCarthyism, but we are perhaps coming close.
I’m not sure what your point is. The argument is about whether there is a false equivalence between communism and fascism. You are veering way off topic into something I doubt you and I even disagree about. Yes, genocide is bad. Yes, authoritarianism is bad.