When anti-gun agitators wish to hack away support for Americans' right to keep and bear arms, they must utter only one word: crime. It's the catch-all, the single basket into which they toss all their rotten eggs. The problem of crime, they say, can be solved if we just get rid of all those danged firearms. In "The Real War on Crime," for instance, members of the National Criminal Justice Commission note, "We know that some things work to make us safer," after which they lament that "Congress is unwilling to enact laws to significantly curtail the deadly firearms that...