Try this one:
Mousie and Sad Girl are childhood best friends in a contemporary Los Angeles poor Hispanic neighborhood. But when Sad Girl becomes pregnant by Mousie's boyfriend, a drug dealer named Ernesto, the two become bitter enemies. While their dispute escalates towards violence, the violence of the world around them soon also impacts their lives.
This movie depicts the gang wars in Californian jails during the 1980s. The half-brothers Paco and Cruz grow up together with their cousin Miklo in one of the lesser districts of L.A. When Miklo more or less accidentally kills another guy in a gang fight, he has to go to jail in St. Quentin, where he soon starts a career in a drug connection. Meanwhile Paco joins the police and returns to the district as a determined officer in the vice squad. When Miklo is released on probation after 9 years, but keeps working for his gang, he soon clashes with Paco.