I honestly don't understand why people bother arguing about gun control every time these things happen. It's not going to happen. A two hundred year old piece of paper written when them most deadly man portable weapon in the world was a Baker rifle or a Tower musket (or equivalent) overrules everything and the US has decided as a nation that dead children are more acceptable than suggesting changing that. That's their choice and they seem to be happy with it (while their kids are alive, obviously).
After seeing it all over the place this week though, anyone suggesting that this is because 'they' banned prayers in school or that teachers should be armed should be sterilised and any children they already have taken away for adoption for the good of the human race as a whole.