I would think Democrat leaders would be denouncing this and the riots(not the peaceful protests.) But they don't seem to. They should be worried about this backfiring on them on November 3rd, and it will. I have personally spoken to working class Democrats in my state who don't like this at all. They didn't like the unrest in our major cities and can't understand why the Democrat mayor and the Governor didn't put a halt to it. They haven't said who they will vote for, who knows, they may even stay home. But: people like order and safety, not chaos.
People will vote law and order. It happened in 1972 and it will be more likely to happen this time. So again, I would think the Biden campaign and major Democrats would be denouncing this stuff.