Boyfriend boxer delivers retaliatory blows

In the beginning of this footage, two men are fighting. The argument continues until a man and a woman pass by. One of the men accidently hits the woman. But what the assailants do not know is that the woman’s boyfriend is a boxer.
The boyfriend, angered by this violent act, attacks the men. With a few accurate punches the assailants are sent to the ground. They do not stand a chance against the boxer and quickly escape.