False equivalence: white supremacists have the right to open carry their guns in that state (which you are probably against the 2nd Amendment for anyone, not sure) they didn't attack anyone. The black block does attack people with bludgeon and less than lethal weapons.
Also freely assembling to voice your grievances is NOT a riot, it is NOT attacking anyone.
Appeal to emotion, generalization, guilt by association, false dichotomy, and WTF are you talking about?
Let me see if I have your reasoning down...So someone was murdered therefore everyone who has ever said anything positive in support of Trump, free speech, freedom of assembly (myself included) MUST be on the side of the crazy person who murdered her and maimed others, and we are all just as guilty as that one person because we are on "his side" and there can only be two sides to this issue: the side of murdering racists and the side of righteousness; and my judgement/reasoning might be clouded because people are wearing black masks? Is that your line of reasoning?
My reasoning on black block protesters being a problem is the video footage of them beating and using other violence on multiple people in multiple cities at events that had nothing to do with racists. You may not understand how egregious their actions are if have not watched the video links I have supplied. I even skipped past the commentary so you don't have to listen to people who don't share your opinion. The last link in my last comment is only video and no commentary, it multiple instances of those actions from where I get my reasoning.