http://www.guardian.co.uk/society/2010/sep/05/men-victims-domestic-violence
http://antimisandry.com/html-moderated/domestic-violence-against-men-key-statistics-22080.html
http://www.csulb.edu/~mfiebert/assault.htm
http://www.physorg.com/news72113800.html
I'm gonna go ahead and bring actual statistics in here Basically, a huge portion of domestic violence is against men, almost 50% (depending on which study you go by), which goes against the common perception that only women can be abused or raped. Anyone who tries to deny this is just supporting sexism against a minority group, that is being men who have been abused in their lifetime, and thus helping perpetuate the current state at which men feel as if they cannot seek help from anyone in such an abusive relationship, precisely because society dictates that either such a relationship cannot exist, or that if it does exist then the man is weak for being in that situation.
Or, to put it on a more emotional level, try walking up to a man who has been physically abused by his girlfriend and tell that a girl getting abused is more important to deal with than his abuse.
Not to mention sexism concerning alimony, child custody, and the draft. Although a draft hasn't been issued in years, the government still has the right to draft men in the country during a time of war, but cannot draft women, and if the man refuses to be drafted he can be fined for hundreds of thousands of dollars.
Here's child custody statistics:
http://www.divorcepeers.com/stats18.htm
When parents mediate, only 6% of the time does sole possession go to the father, while when going to court 11% of the time they go to the father. The statistic for women is 63% and 44% respectively.