Earlier quoted context omitted.
There are very few clear, unambiguous riots. What is a protest that has a few looters or arsonists operating within it? I've seen plenty of events here in the Pacific Northwest that police have labelled riots that I would in no way call a riot. I think that the legal definition very much plays into the discussion, because it gives the police the power to tell the media that a riot occurred.
There was one in Chicago just over the weekend. Police declarations of riots are much more common than what you or I would call a true riot, but I don't think it's reasonable to suggest that riots are a non-issue.
Something that happened here, as the protests kicked up, was organized robbery under the guise of looting. We'd see a van pull up to a boutique clothing/electronics store, and a group would pour out... a mix of "looters", lookouts, and security. They'd smash the store, grab the best stuff, toss it into the van, and roll away in minutes. That's not "looting". That's organized crime. And, because Minneapolis police were too busy tear-gassing peaceful protesters to bother protecting residents or property, it was easy.
So Chicago... after a police shooting, someone immediately goes online and calls for looting downtown, where all the nice boutiques are. Which, of course, creates plenty of cover for these organized teams to clean out stores. In other words, there's a fundamental difference between an organized crew robbing a boutique clothing store, and a poor mother walking out of a "looted" Target with a grocery cart full of diapers and food.
The public conversation, of course, lacks such distinctions.