[Porsche-O-Phile]

This is widespread - do a Google search on the story of Adrian Schoolcraft (NYPD) and what happened to him when he dropped a dime on his precinct's widespread downplaying and reclassification of serious crime to manipulate their numbers. The story (and associated videos) are downright shocking.

And FWIW the mafia doesn't generally beat up good paying customers, only informants or those who don't pony up - which again isn't too much different than local governments/PDs. Try not paying your taxes (protection money) sometime and see how nicely you're treated by the local cops.