N.W.A formed in 1986 -- five years later, they split, never to perform together again. Until now.

At this weekend's BET Experience in Los Angeles, the group reunited for the first time in decades. Ice Cube, DJ Yella and MC Ren jumped on stage to perform their legendary hit "F--k Tha Police,” while a real cop car drove behind them on stage, and a video screen played clips of police violence and protests.

The last time Ice Cube had performed on the same stage with Yella was 1989, and 2000 for Ren. Not all of the original members were present -- Dr. Dre failed to make an appearance, and Eazy-E died in 1995.

This appearance comes as a new biopic, "Straight Outta Compton," about the formative years of N.W.A, is just weeks from release. The film has already grabbed headlines for its fair share of surprises, including the fact that late rapper Tupac will be portrayed.

Despite appearing at the BET awards, MC Ren hasn’t been entirely positive about his place in the film. After the trailer appeared online, he took to Twitter to call out his lack of an appearance in the clip.

Check out the trailer for "Straight Outta Compton," which hits theaters August 14, below: