Rent Dog Pound (2010)

DOG POUND is Scum for the 21st Century, a tough and brutal film set in a young offenders institute for teenage boys that the system doesn't know what to do with. The long-term inmates have built a rigid power structure based on fear and the guards use the prisoners to let out their own frustrations. Butch, Davis and Angel are new arrivals. They have never met before but they all soon realize that the odds are stacked against them and that their only hope for getting through their sentences is if they watch each others' backs. But friendship will only get them so far when their endurance is stretched to the limit...