How about criminals? Higher standards for them? Maybe that music they play while filming the knockout game, or stuff for Worldstar?
But yes, I hold the police to higher standards of professional conduct than I do common criminals.
I'm not saying there aren't some abusive, nasty cops out there. But the "nice" cops aren't so effective when dealing with nasty people.
Number 1 way to prevent violence during arrests, or avoid arrest is (Ding Ding!) BE RESPECTFUL.
So initially I don't present as middle class, but once they get a hint of the fact that I am, you can watch them change their behavior nearly instantly. Other times, they don't ask questions like that and have then for instance lied about my drivers license being revoked, taken it, and then pretended like that never happened later, requiring my dash cam footage to even get them to admit they pulled me over.
My friends of color aren't typically even given the chance to re-calibrate their class position to the police by being asked questions like that.