I really don’t want to be the one to say it, but there are opportunists that take advantage of these situations that the curfews are to impact (which, if I remember right, are supported by the city). I still remember what happened to Santa Monica not too many years ago which also resulted in a curfew. Temporary curfews are kind of a common practice anywhere in the US when there prolonged unrest.

That’s not to say it’s the protestors fault, of course; the whole situation is obviously escalated by Trump and the media. Most cities aren’t getting the same coverage and attention (and resulting opportunists). Also, still not a riot no matter how much these assholes insist it is.