Democratic presidential candidates have recently taken up a new calling: offering advice to hunters. Governor Howard Dean supports extending the assault-weapons ban next year "because I never met a hunter who needed an AK-47 to shoot a deer." Senator John Kerry offered, "When I go out there and hunt, I'm going out there with a 12-gauge shotgun, not an assault weapon." Clearly what worries these senators is that people and not deer will be "hunted" with these guns. As Senator Carl Levin noted early this year, allowing the ban to expire will "inevitably lead to a rise in gun crimes."...