Every time these “protests” break out, I say time to start shooting.
Normal natural law would allow that.
They immediately show themselves to be unhinged. The only thing to stop it is force, because that is what they use.
“As soon as the first injury occurs, no more Mr. Nice cop.”
Empty the magazine.
Reload.
Repeat until effective.
Simpler is “looters will be shot” with the National Guard called out and placed as fast as it can be done. If that policy is announced in anticipation of riots, it only has to be carried out twice in different locations. Once will be ignored. Twice will end the riots until/unless they become real armed Revolution. That policy carried out as announced will ultimately preserve a many lives and a whole lot of property that would otherwise be lost to the violence.