This is becoming a common thread these days; assuming the male is the aggressor. I've heard stories of girlfriends beating their boyfriend so bad as to have him visibly bleeding, yet when the he calls 911, he is the one that gets arrested with the police saying something along the lines of, "Yeah, there's no way a little girl like that beat you up."

I would venture to guess that the majority of domestic violence is male against female, but we have to start recognizing and allowing for the fact that it happens the other way around more often than we might be willing to think.