What actually happened is entirely unimportant and that is the real point. They could be rioting because a bus ran over some kid, or a sports team won or lost. The fact that a cop was involved is meaningless. Blame the cops, well so what, they need to have something to blame right now. Later they will blame all privileged white people with jobs and homes for their unjust living conditions. It will be an excuse to take stuff because they need to sacrifice more for the good of the people. These riots are just a practice run for bigger and better civil disobedience events. They will come to residential areas and steal homes in the end. It has been happening everywhere the communist take power.