The main thing to note about the resurgent violence is that there is no plan or program to it.
From the beginning of the protest movement set off by the killing of George Floyd, there was a split between the earnest young activists who wanted to draw attention to a cause and the angry would-be revolutionaries who were there to brawl. We saw videos from the early protests of young activists begging the black-clad anarchists to stop smashing store windows or vandalizing property (and being ignored).
Over time, though, the non-violent activists have mostly gone home. After all, suddenly a police reform agenda was what everyone was talking about. It was time to stop marching and start the actual work of forming an agenda people could agree on—this is the tough part—and getting politicians to vote for it.
If, that is, a reform agenda was what you were interested in.
The more radical wing of the protests was not, in fact, interested in such an agenda, and some weeks ago, the two wings of the protest movement moved more clearly apart.