Christina Taylor Green, 9 years old. Another casualty of America's estimated 250,000,000 guns. She'd gone with a family friend to meet her local Congresswoman, who'd just read the First Amendment in the House's ritual reading of the Constitution and now lies near death. Did Arizona's and the country's poisonous political discourse lead the man who killed Christina and at least five others to his horrifying deed? Perhaps. But it is the gun that made the massacre possible. Sorrow, o America.