Dark Blue is a 2002 film directed by Ron Shelton.

Tagline: Sworn to protect / Sworn to serve / Sworn to secrecy.

Set in the Los Angeles Police Department in April 1992, the movie is a thriller that takes place just days before the acquittal of four officers (three white and one Hispanic) in the beating of black motorist Rodney King and the subsequent L.A. riots. In this racially-charged climate, the LAPD's elite Special Investigations Squad (SIS) is assigned a high-profile quadruple homicide. As they work the case, veteran detective Eldon Perry, known for his tough street tactics and fiery temper, tutors SIS rookie Bobby Keough in the grim realities of police intimidation and corruption. Meanwhile, Assistant Chief Holland, the only man in the department willing to stand up to the SIS, threatens to end Perry's brand of singlehanded "justice" on the Los Angeles streets. While navigating through the tumultuous neighborhoods of South Central L.A., Perry and Keough must track down cold-blooded killers and face their own demons, which prove to be more ruthless than the criminals they pursue.