I think the main problem with the left is that they think that their violence is always justified.
When Richard Spencer got sucker punched, the left exploded with "punch a Nazi" justification tweets, posts, videos and whatnot.
Yvette Felarca and Eric Clanton have plead not guilty in their separate assault cases. Eric Clanton is claiming it wasn't him, but if it was him, he was justified under "self defence". Yvette Felarca is using "self defence" as well. Neither are claiming, at least not currently, that they were victims of physical violence. They are claiming that they were victims of "thought violence", so they had to fight back physically.
Democrat mayors are telling the police to stand down, then arresting mainly those on the right.
Charlottesville was a disaster because of the situation caused by the mayor and police. The police forced the right to go through the leftist crowd. Of course this caused problems. The police used the violence to justify calling it an unlawful assembly by the right.