Shoot rioters, just a couple of them at each of these affairs and the rioting will end very quickly. I would bet it would be each of two. Every mayor and governor should announce that shooting rioters is henceforth policy. it will save many lives by preventing these things growing to involve firebombs and guns and they will if they are not put down firmly but tolerated with token opposition. The Left thought they were on the cusp of finally taking it all and they feel cheated and are going to push it as hard as they can with the goal to be either piecemeal capitulation of the society or actual violent revolution.
Only shoot white rioters so BLM doesn’t get stirred up.
The KENT STATE solution...
It depends on the town, and the mayor. In Portland, where the mayor supports Antifa, and tells the Leftist public that the city can't "afford police overtime" to have extra bodies to confront the rioters, Antifa and the city council has a deal going. If they don't damage property, they can attack all the "alt-right whites" they want. Downtown Portland, around Pioneer Square, is a ghost town...