Of course, the key is legality, has any US govt had the balls to proscribe racist and colour prejudiced organisations?
If these organisations WERE illegal there would be no need for violence, the law would not permit the demonstrations.

However proscription is a slippery slope, before long the leftist would be squealing as hard left organisations were also banned.
Don't say THEY are all good boys, or even a majority of them are good boys.....they contain many violent psychopaths who hate officers of the law, the rich, and anyone who dares to think conservative thoughts. I have been amongst the during my CP days before I grew up.
Even the soft "liberal" left have developed a frighteningly violent streak, which is pretty obvious from some of the posts in this thread.
i.e. "Hiding behind the law"

In truth the US seems pretty fucked up politically and it was like that long before Donal-John. Perhaps it's good that the dirty covers are coming off at last......isn't it good to talk?