At the risk of noting the obvious, Sunday's deadly confrontation between a semiautomatic weapon-wielding Minnesotan and a group of hunters in northern Wisconsin can and should be factored into debates about the availability of semiautomatic and automatic weapons. When hunters in Sawyer County confronted the Minnesotan - a 36-year-old Hmong immigrant named Chai Vang who was in a deer stand on private property and told him that he would have to leave - several of the greatest myths that are peddled by opponents of gun control exploded.To wit: • Myth One: A semiautomatic weapon is just another kind of gun.When...