Justin Bieber was attacked on stage during his concert in Dubai on May 5, 2013 by a crazed fan.
It appears the fan jumped on to the stage and tried to grab Justin before security rushed him and drug him off the stage.
Bieber also went down in the fuss and his piano was knocked over in the process.
Toward the end of the video you can see security team dragging the fan by his arms off stage.
