Right before this video starts, two thieves on a motor bike have just stolen a purse from a woman, and are speeding away.  Enter Bike Guy.  He sees this.  Stops.  Waits calmly.  And when the thieves speed by him, he flings his bicycle right into their purse-nabbing helmets, knocking them off their scooter into a beauty of a wipe out.  Bike Guy briefly distracts the dazed muggers, then runs, as other witnesses start to crowd around and fill the street.  The action has been lovingly looped with a fairly obvious music choice.