I have not workl in police work at all so it is hard to know what can and cannot be done, but it seems that the cultural has to change.
If you change the cultural like you note below then I could see some potential.
Now I don't know if this is true or not - but it seems that police almost have a brotherhood (and/or sisterhood). Understandable from the danger of their job. My husband who was in the Marines - that is what is like - you have each others back. So are they protecting those officers that are "baddies" because of this brotherhood? Is it you protect a fellow officer no matter what? So the cultural is such if you stop/report a baddie you are looked at poorly?
Assuming the above is true - I wonder if this brotherhood of having each others back has to change a little - like you refer to - the "baddies" are not really brothers or sisters - so you should not have their backs. You need to have the backs of only those that are true brothers/sisters and those that are officers that are in it to truly serve and protect. You protect your true brothers and sisters not those that are hurting the brotherhood and society.
But like I said I do not work in police work nor have any close that does - so I cannot say.
But I see what you are saying and yes if it is true then certainly that would help.