Well merely beating the shit out of them is hardly murder. I think guys who beat women are some of the lowest scum on Earth. On the flip side, a women who is beating a man thinking the law will be on her side regardless gives the man no choice but to use force in order to make it stop. Force being knocked out or something, not killing her incase someone takes that the wrong way. Self defense goes both ways. Men best make sure they have proof of first hand abuse by the womans hand.
we need to all go back to kindergarten. "keep your hands and feet to yourselves!" remember?