Things don’t need to be legal to happen, and no consequences are possible against state-sponsored violence. Well, not any direct consequences anyway. This is classic “who watches the watchmen” stuff. Who stops the police when they’re committing crimes? More police? The super-police? What happens when the super-police start committing crimes too? What happens when they’re even worse than the police? This is not a solvable problem, it is a manageable one, but only when it’s being actively managed, which has not been the case for a long time.