Hitting women - right or wrong?

I think that hitting woman is the same as hitting man. Since woman are requesting for gender equality, then obviously this has to be taken into account here. I believe that it is the same for man and woman. Violence can be justified depending on the situation. It does not matter if it is man or woman, if it is just some personal argument or disagreement, then there is no justification for violence. The only justification for violence is when the other party starts it, then you will be forced to return it. So, hitting woman is justified if the woman starts hitting the man first (excluding special circumstances like breakup slap etc).