There are confirmed reports of agitators that have been stopped before violence occurred, thank God. [0]
Last evening, Denver's PD chief marched with protestors and mostly allowed them to walk and shout well past curfew. I've not yet seen looting reports (though that may change), and the injuries to protestors and PD seem to have been much less as of now. Compared to other nights, it was successful.
Each city is different. Lumping people together nationally is not helping anyone discover what is happening locally.
[0] https://twitter.com/KyleClark I suck at twitter, so I can't figure out how to link specific tweets here. But Kyle Clark is the head anchor for Denver's 9pm news broadcast. The tweets in his feed specify the facts much better than I can.