Justin Bieber Throws Down in Huge Fist Fight: Video

Justin Bieber got into an all-out street brawl with a guy much bigger than him Wednesday night in Cleveland.

TMZ obtained this video of Bieber, shot shortly after 11 PM, outside his hotel in downtown Cleveland — he was face-to-face with the guy, who threw a light blow at Justin’s head. That’s when Justin uncorked a right to his face … and then it’s on!

Several people were standing nearby and tried to jump in, but the fight ends up spilling to the ground. Watch the video and continue reading at TMZ…