National Security (2003)

Martin Lawrence stars in this action comedy directed by Dennis Dugan (Happy Gilmore). The film concerns an unlikely partnership that forms between two LAPD rejects. Hank (Steve Zahn) is a straight-laced officer who is fired and imprisoned after supposedly brutalizing an innocent black man. It turns out the 'victim', Earl Montgomery (Lawrence), is actually just an angry citizen who, frustrated after being dismissed from the police academy due to his bad temper, seized the opportunity to take out his rage on the hapless Hank. But six months later, when Hank is released from prison, their paths cross once again when Nash (Eric Roberts), the man who killed Hank's partner, robs the warehouse where Earl is employed as a security guard. Angry that Nash refers to him using a racial slur, Earl attaches himself to Hank, who wants nothing to do with the trash-talker. But Earl won't back down, and the bickering pair begin to infiltrate a smuggling ring and the crooked police department that rejected them months before.