NYPD Go H.A.M. After Pete Rock & Smif-N-Wessun Concert! (PHOTO x VIDEO)

Legendary hip-hop artists Pete Rock and Smif-N-Wessun celebrated their album release party at New York City's Tammany Hall last night, but then when celebration ended, things turned violently ugly.

STORY: Police Brutality Gone Wild

Eyewitnesses videotaped New York City police officers being overly aggressive toward the crowd that had gathered after the party.

UK DJ/Presented Jay Diamond released the 8 minute video, showing NYPD brutally attack a young man. It’s unknown what sparked the melee, but the video shows that many of the NYPD officers were being aggressive when trying to disperse the crowd.

In the video you can hear NYPD telling people, ‘Fuck off! Get off the block!'

Take a look at what happened.