Anti-gun bigots will point out that it's a good thing he used a knife instead of a gun. I would point out that it's a good thing he used a knife instead of gasoline, and the same thing applies to all who committed mass murder with a gun, since a mass murder committed with gasoline killed a great deal more than even the biggest mass murders committed with a gun. The liberal press barely mentioned it, so for those who don't remember, google the Happy Land Social Club fire in NYC. Good to know these things when you are on deprogramming missions among liberal dupes.