[bliblah]

You imply that the police officers gain nothing from this state of affairs. In my own experience, a lot police officers grow up in the same hoods as the same criminals they pursue and the most corrupt ones use this to leverage relationships within gangs for money.

Just to give you an idea, an acquaintance of mine never knew his grandfather was in a federal prison, he was told it was a secure retirement home. The grandfather's crime was a dirty cop that had literal death squads killing people in cold blood for years and making money off dead dealers. He used the chaos in the streets to line his pockets with money and silence the people who tried to snitch on him.