The rioting and looting is spreading farther and faster than we typically see, and I would like to propose the idea that wearing masks is (at least partially) fueling it.
While most of the masks don't completely obscure facial features, they offer a modicum of anonymity, and they also serve as a psychological "shield" from watching eyes and cameras. As such, they reduce a person's natural resistance to commit crimes. That's why Antifa wears them after all, and that's why the KKK hid beneath hoods.
Keep in mind that tempers are running hot right now anyway, complements of our governors and their draconian rules. Folks were looking for a reason to act out and CNN gave them one.
Add in the masking effect and it's a recipe for disaster.