You really do your best to make sure you miss the point. Slimy as they are, the supremacist scum was acting legally. That's protected by the Constitution whether you like it or not. The Left wing scum instigated the violence because they disagree with the supremacists - they should be afforded their own opportunities to disagree within the law but not to "barge in" and shut them down with violence any more than those on college campuses should be allowed to physically bar conservative speakers.
Disallow even the slimiest the opportunity to freely assemble and you set precedent for shutting down anyone for political reasons.
Take some more meds - the current dose isn't working.