I ride a motorcycle myself, watching the video, the car was right on the motorcycles ass, less than 1 car length, that's not tailgating, on a bike, that's murder. I've lost several friends due to be struck from behind by cars. The video and news commentator even says it doesn't show what started the road rage, but I'll bet the driver of the car was pushing the biker and he pulled the weapon on him or her to back off. Wrong thing to do, but it did make the car fall back.
