Unhinged. Gun nut. Transgender. There was yet another horrific school shooting today, and all of these descriptors have applied to the presumed shooter. Which one do you think the media will use in its headlines? Mentally disturbed people are an accepted class within our society. We even vote them into elective office with startling frequency. Guns are favorite bête noires for politicians hoping to score some points, but they're not going away. There are more guns than people in the Un...