Things got out of hand last night at The State Of Emergency concert in St. Louis, which was in honor of Mike Brown.

During August Alsina's set there were problems with the sound quality and that seems to have put the 'No Love' singer in a bad mood. (It also may have been what caused Fabolous to cancel his set.) After leaving the stage, a frustrated Alsina turned down a request for a photo. Soon after, the show's promoter had a group of men confront Alsina.

As you can see in the video below, Alsina fights back. According to a Shade Room tipster, security intervened and things never got any worse than the pushing and shoving that was captured on camera.

This isn't the first time Alsina has been involved in a confrontation with a promoter. He may sing like a lover, but the 22-year old certainly has some fight in him.

From the vault: