This is the very start of the riot:
https://mobile.twitter.com/juliacarriew/status/826974244210827264/video/1
There are federal anti-Klan laws on the books where it’s illegal to wear masks in public. So all these folks be arrested on the spot if CA has those.
Or for the rioting and felony destruction of property!
https://en.wikipedia.org/wiki/Anti-mask_laws
Police should have been there, forced masks off and for them to identify themselves.