If you have the right to refuse to unlock your phone for a cop, then a cop that demands it even after the suspect has actively refused it should be reprimanded.
The meme of "We investigated ourselves and found no wrongdoing" runs rampant because it's often true. Police have literally gotten away with murder, either because the DA or whoever decides to not press charges, or the prosecution literally sabotages their own case to protect the police, as in the case of the shooting of Daniel Shaver, where the prosecution and defense attorneys asked the judge to not show the bodycam footage to the jury [0]. Anybody who's seen that video knows how damning it was, and it's absolutely reprehensible that a prosecutor would want to not show it to the jury. What made it so much worse was that the police department released the video only a couple hours after the trial had completed with the Not Guilty verdict.
https://en.wikipedia.org/wiki/Shooting_of_Daniel_Shaver#Body...
If I have an abusive co-worker in my tech job and my manager and HR refuse to do anything about it, it just makes work suck.
But an abusive cop ruins lives with bullshit charges and bullshit handling of innocent people. In worst-case scenarios, they're murderers that get away with it.
So yeah...it's a pretty clear distinction, and I refuse to believe you're asking this question in good faith.
The ideal is obviously 'no bad cops' but everyone here can agree that's not really achievable, so what does doing a reasonable, or even great job look like. How many bad cops are on the force if we do everything we can?
I've dealt with lots of cops for minor stuff (trespassing, traffic infractions, crashed parties), and have only had a bad experience (turned out fine anyway) once. I have several relatives who have been in and out of the system, and from my point of view, they were probably treated more fairly than they deserved. I get that that is not everyone's experience, but it makes me skeptical that the problem is somehow grand and structural and not just "some people are assholes."