After the Washington Navy Yard shootings two weeks ago, the gun control and background check issues have come up for discussion again, as has the idea of creating more gun-free zones. I don’t know how to break it to the anti-gun people, but it’ll never work to lower violence. Washington, D.C., Chicago and New York City have the most stringent gun-control laws in the nation, and yet they still have a huge number of gun-related incidents every year, by people who usually have possession of them illegally. But let’s look beyond gun-related crimes. How about violent crimes? A number of individuals in the anti-gun crowd tout the idea of being passive. In a study of rape cases, there was a 32% instance of successful rapes on women who were unarmed, and a 3% instance in women who were armed and defended themselves. Are those numbers counted in cases of...