No one can stop Usain Bolt... except perhaps a camera operator who didn't see where he was going.
Just moments after the Jamaican runner won his second gold medal at the World Championships in Beijing on Thursday, he was knocked to the ground by a cameraman who was so focused on Bolt that he didn't notice that his motorized two-wheeled vehicle rolled over a dolly track.
As the RAI commentator says, "Mamma Mia!"
