according to the u.s justice department's bureau of justice statistics, between 1976 and 2004, fully 31% of all murdered children under the age of 5 were killed by their own fathers.
(which is why we aren't kidding when we say that parenthood should require a regularly updated license, no different than a driver's license or a license to teach. if republicans truly believed in the sanctity of the family as much as they say they do, they'd back us up on this. but, of course, it's nothign more than a code word for controlling other people's families.)
