I guess we “civilians” should adopt something as funny: “Don’t take PTSD from a cop, return the favor and make the sorry bastard earn his pay!”
Or how about: “Fight Cop Crime, Taz’ First!”
I don’t think cops would find that funny. I find their “slogan” an act of war against the population.
Personally, I think concise, well written comments in written form with reply requested to the local head of law enforcement might give them a citizen’s perspective on why this is unacceptable would be the best course of action.