No different than the wild west when local sheriffs would hang someone because he was afraid townspeople would attack him.Of course it was wrong, but they had to please the mob or the mob would have burned down the city.
It is called law and order. Without it, you cannot maintain a working civilization. Exactly how you are seeing these urban areas - literally - disintegrating. 5 more years of this kind of justice abandonment, and inner cities will literally be ghost towns.