The right way to handle these tools is to ignore their rallies.  Going and raising hell just draws attention to them and helps them recruit the feeble minded.  Pay them no attention and they will remain in the holes they crawled out of.  What happened in Charlottesville only gave them a megaphone and amplified their message.  The best way to take these characters down is with the law. They will break it, and that is when you swoop in and take care of business.  Comb through their taxes and the money trail and what activities its funding.  That is how you bring down dangerous groups like this.  Do it quietly.  Don't give them center stage.  Wake up people!