Tickling, the Aurora shooter had his apartment booby trapped with explosives. Very few in the media reported on it at all. If he had blocked the exits and firebombed the place, with the materials we know he had, the death toll would have been much, much higher. Anyone with access to the internet has access to weapons much more deadly than guns.
Gaily bedight, A gallant knight In sunshine and in shadow, Had journeyed long, Singing a song, In search of El Dorado