He’s right that many have come to see sporadic mass violence as part of American life:
Some events change minds and change politics, as any observer of 9/11 and its aftermath can confirm. But Americans – who have lost presidents, civil rights leaders, sons, and daughters to maniacs packing heat – have normalized gun carnage. Step outside of the violent, visceral moments of last night, of Gabrielle Giffords, of Virginia Tech, of Columbine and all the rest and you find continuous confirmation of our skill at normalizing. I leave it to you whether it demonstrates that we’re blind or that we’re realists about violence.