I agree with you that if you have a different district/office handling this sort of stuff. But it always comes down to Who's Watching the Watchmen. Checks and balances are hard AF.
There's a reason why there are more former prosecutors on the bench than former defense attorneys.
Judges don't make laws (well, at least, they aren't the ones I'm talking about with a jurisdiction-wide, state or federal, prohibition.)
Now, if you want to say that it's not easy to control because legislators and ultimately the electorate are biased toward and support this kind of police intimidation, that may be the case (though that's exactly saying it's not easy to solve because we, as a society, actively desire the status quo. It's easy to solve, it's hard to convince people it should be solved, which has always been the problem with civil liberties.)
The fact that they've pissed off the cops may or may not factor into it. Not saying you're wrong, just that it's not quite THAT simple.
There is an inherent conflict of interest in having the person responsible for investigating crimes be someone who needs to work closely with the people and organizations who allegedly committed the crimes.
The deeper problem is that juries do not convict police officers for this sort of thing, which is one of the reasons that prosecutors decline to charge officers. While a "special prosecutor" might result in a more enthusiastic prosecution, without the risk of damaging the relationship of the district attorney with the police force.
I don't think a law like this would be a panacea, or would even meaningfully impact the problem.
Having a special prosecutor handle police misconduct cases, instead of the DA, does not in any way preclude the right to a jury. These cases would still go to trial like any other. The difference here is that the incentives would be flipped: DAs are incentivized to go as soft as possible on cops- either by instructing the grand jury not to indict or presenting the weakest case possible at the actual trial, because if they don't it harms their ability to work with the police for regular cases. Special prosecutors would not have that issue.
> I don't think a law like this would be a panacea, or would even meaningfully impact the problem.
I'm not claiming it's a silver bullet. But it would help, if only because cops would then know that they don't automatically have a friend in the prosecutor if they break the law. And unlike a lot of the other steps that need to be taken to fix the American justice system, this one could be done instantly just by passing a law.
"In its majestic equality, the law forbids rich and poor alike to sleep under bridges, beg in the streets and steal loaves of bread." -- Anatole France
That lets every person arrested charge the police with something criminal, and have it taken seriously, no matter how bogus the charge.
What? You thought the police practice "testilying", but the criminals don't?
Now, true, some such accusations need to be taken more seriously. Not all of them, though. The prosecutors err too often on the side of the police. Erring too much on the side of the accusers is not the answer, though.
No, it doesn't. An independent special prosecutor can brush off an allegation as not credible as easily as a police-aligned prosecutor; in principle, they won't be biased by their other prosecutions depending on the police, but they don't somehow lose the capacity for judgement along with that source of bias.
I think there's a pretty wide range of options between "let the DA who needs the cops to lie so he can keep his conviction rate high half-ass his way though the case" and "bring charges literally every time someone wants to bring charges." I think OP was talking more about WHO handles them, rather than whether all of them have merit.
Fixing problems means making qualitative changes to how the broken processes work.
This is a simple change that would, overnight, completely flip the calculus of police who literally get away with murder.