For a second there, I thought this was the same Kevin Williamson whose entire career has consisted of blood-splattered, soul-sucking teen slasher movies. I thought that, but then I realized that it would be insane for such a man to even show his face on a day like today, let alone lecture the world on the root cause of senseless violence. Hence, it must be an entirely different screenwriter named Kevin Williamson.
It **IS** the same Kevin Williamson. . .
http://en.wikipedia.org/wiki/Kevin_Williamson_%28screenwriter%29