but the message cops themselves got was that if they actually do their job and arrest criminals, there is a chance that a politicized mob could send them to prison for the rest of their lives

That’s the message?

You know That cop killed a guy right? Suffocated him. On camera. If he just did his job and arrested him the politicized mob wouldn’t have put him behind bars. But the problem is he killed that guy, and it wasn’t some freak momentary lapse. He suffocated him. If cops are quitting because they’re worried they might go to jail for killing a completely incapacitated individual in a very deliberate manner, they might be doing society a favor.