Cop Land(1997)

Freddy Heflin is the sheriff of a place everyone calls “Cop Land” — a small and seemingly peaceful town populated by the big city police officers he’s long admired. Yet something ugly is taking place behind the town’s peaceful facade. And when Freddy uncovers a massive, deadly conspiracy among these local residents, he is forced to take action and make a dangerous choice between protecting his idols and upholding the law.