Let us quote from a book on the subject by McNeely, R.L.. and Robinson-Simpson, G. "The Truth about Domestic Violence: A Falsely Framed Issue" : "Yet, while repeated studies consistently show that men are victims of domestic violence at least as often as are women, both the lay public and many professionals regard a finding of no sex difference in rates of physical aggression among intimates as surprising, if not unreliable, the stereotype being that men are aggressive and women are exclusively victims."
http://www.abs-comptech.com/DVMETAht.html

In July 1994 the Bureau of Justice Statistics of the U.S. Department of Justice released a Special Report detailing the results of a survey of family homicides ...in spouse murders women represented 41 percent of killers. In murders of their offspring, women predominated, accounting for 55 percent of killers."