And why do you think they spike in the wake of a shooting like that in Aurora, Colorado, or in Littleton, Colorado?
Per this article, they spike because the People fear what the politicians might do. So, it isn't so much the shooter and his or her carnage that pushes up the sale of firearms and ammo. It is more the politicians, like New York City Mayor Michael Bloomberg.♠ See, people do pay attention to what politicians say.
On the other hand, the President and his main challenger have been very measured in their reactions.
Hat tip to Ann Althouse.
Regards — Cliff
♠ It was when the Mayor was on the CNN Piers Morgan show. Mr Morgan is an ignorant Englishman who does not understand our culture, but sees fit to lecture us on who we should be. I assume he has a model in his own mind. I hope it isn't the French.