All groups should be given a platform to express their beliefs unless their beliefs center around the promotion of their own ideals and extermination of others. If people's beliefs spread hate, fear, and anger within communities it is in the best interest of the country to NOT give these groups a space to practice hate. It is very clear that these groups will do nothing but divide this country when we've worked so hard to bring people together over the last few decades.
TL;DR ABOLISH FREE SPEECH FOR THOSE WHO WISH TO USE IT TO SPREAD EVIL