I have seen many video about about a men hit a girl in self-defense or just to payback because of her keep on harass and hits him, it not like he beat her even though she is on the ground. Yet people still say it is wrong to hit a girl, street interview, tv show all said a man need to hit a girl when it is necessarily (almost get killed). People need to learn that it is wrong to hit anyone, if men don't fight back i bet she will continue harass other. Because women think she can always get away with it. Woman hits men is become a minor issue as for men is a major issue. As for a men myself, a men should never ever start a fight, if a men wants to hit a women in self-defense they should always warn the women about it.