An arranged fight between two young men erupts on the streets. Both men tried to land punches, but missed. The checkered shirt man dodged a sloppy hook attempt leaving his neck exposed to a standing guillotine, but he managed to turn it into a huge slam. They went to the ground and the man wearing the checkered shirt got the back, put one hook in and started to pound his opponent viciously.

People approached the two brawlers, while the black shirt man tried to reverse the position and survive, but he was helpless. The checkered shirt man got a full body lock while punching his opponent who was belly down, but the fight stopped, simulating what would be the end of a round.

The bout restarted and the black shirt man came furiously, landed a sloppy punch while his opponent tried to clinch, but they separated instead. He attempted to land a kick, but his opponent caught it, kicked his left leg and got the take down easily, falling in the full guard and the fight stopped again.

It seemed that there was no hope for the man in the black shirt, and indeed, there was not: the first strike landed by the checkered shirt man, a right hook knocked him out cold.

Street fighting and self-defense are very opposed to each other. While the first one depends on the willingness of the two or the group of people involved, self-defense is about protection of the physical integrity of those who are being attacked:

The main difference between street fighting and a self-defense situation is that a street fight is avoidable, whereas a self-defense situation is not. The other main difference is that the fight is consensual between both parties. A typical situation might involve two men arguing in a bar, and then one suggests stepping outside, where the fight commences. Thus, it is often possible to avoid the fight by backing off, while in self-defense, a person is actively trying to escape the situation, using force if necessary to ensure his or her own safety. [Source: Wikipedia]