Animal Factory

Animal Factory is a 2000 crime drama film about life in prison, set in San Quentin. The film was directed by Steve Buscemi, and stars Willem Dafoe, Edward Furlong, Danny Trejo, John Heard, Mickey Rourke, Tom Arnold, Seymour Cassel, and Mark Boone, Jr.. Animal Factory is based on the novel of the same name by Eddie Bunker who plays the part of Buzzard in the film.

Over the next few days, Copen helps Decker out by getting him better jobs, food, and even transferring him to his own cell block. Mainly however Copen helps Deckers case and points out that under a new article passed by the legislature, a judge can modify a sentence in the first 90 days if he sees fit, so Copen who is the assistant to the Captain of the Guards helps write false reports and gives Decker advice to stay out of trouble, which will make Decker appear as a very small threat to society. However, after large inmate Buck Rowan attempts to rape Decker in the bathroom, Decker stabs Rowan in a fight involving Copen, paralyzing Rowan. Rowan signs a statement claiming Decker and Copen are responsible and their cells are stripped and they are restricted to them.Because of the stabbing, Deckers attempt at a modified sentence is denied and his sentence remains five years. Meanwhile, Copen manages to get word out Rowan is snitching, and an inmate working at the infirmary poisons Rowans IV with cleaning fluid. The case against Copen and Decker is thrown out as the victim and main witness is dead. ........

Source: Wikipedia