Somewhere in London, a couple spends an underpass where two young men. One of them throws his cigarette girl's hair, something that would infuriate her boyfriend. I approached the first sending him to the ground with a loud THUMP. Then, in the second attack with even a fist before leaving with his girlfriend.
The video was filmed by security cameras and its authenticity has not been ascertained. Some speculate that the video is jerky, but the way that falls after the first punch young (seems to be unconscious falling with his head on the ground) shows that are real.