After a shooting, once the dust has settled, and the initial shock and panic has abated somewhat, fearful minds begin to cast about for explanations. Given the frequency with which gun deaths occur in the United States, "Why did this happen?" and "Who could do something like this?" are questions the country faces with grim regularity. Unfortunately, a consistent and dangerous narrative has emerged—an explanation all-too-readily at hand when a mass shooting or other... (GunPolicy.org)