If this is true, why do those of the "Thin Blue Line" close ranks and defend their fellow officers EVERY time one is accused of lawless activity?
If the police were more open and honest about the "bad apples" in their barrel, and actively sought them out and removed them, your statement would be true.
Then there is the whole "Us versus Them" attitude of nearly every officer out there.
Don't misunderstand, I have several friends who are active and retired police officers, and they admit to what I posited above. Drop the whole "we v they" thing, clean up the dirty cops as best you can, and we can start afresh.
That is your opinion with no basis in fact.