They are a bunch of rich white Dems just as you point out. They only attack weaker targets. The authorities are complicit and these thugs go free. These rich white kids probably have trust funds and they have a lot of vices. It should be illegal to wear masks in a demonstration like the KKK used to do with hoods.
Yes, these cities can pass ordinances that outlaw wearing masks while protesting. If you show up wearing a mask you get arrested right away just for that.