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...
It doesn’t depend on anything except the willingness of AuntieFaye’s snowflakes to get shot. I am not commenting on the willingness of the mayors to actually deal with the rioters.