Today, as Tengrain and M. Bouffant noted, is the twentieth anniversary of the Bombing of the Murrah Building in Oklahoma City. The bombing was perpetrated by a right-wing whit supremacist extremist named Timothy McVeigh, who was executed in 2001, and his accomplice, Terry Nichols, who is serving a life sentence in prison.
I don't believe in the death penalty, and I have a suspicion that McVeigh's death prevented a more comprehensive investigation into the right-wing extremist terrorism that plagued the United States during the Clinton Administration (there were a string of bombings throughout the South, perpetrated by right-wing extremist Eric Rudolph, with a bombing during the 1996 Atlanta Olympics being the most infamous of these bombings). McVeigh (and Rudolph) were involved in a broader white power, right-wing extremist movement. The violent attacks perpetrated by home-grown right wingers (as opposed to the Muslim right-wingers who perpetrated the 9/11 attacks) largely went on hiatus during the George W. Bush maladministration, and, thankfully, right-wing terrorism has been spotty and incompetently carried out during the Obama Administration.
The real horror of the Murrah Building bombing was the callous, almost clinical, nature of the attack- perpetrator McVeigh described the children killed in the bombing as collateral damage, a DoD euphemism for dead civilians. McVeigh was radicalized, but his rhetoric had a chillingly bureaucratic "flavor". McVeigh was a monster, but he was also a product of a monstrous system, a system which reduces dead innocents to cold equations, mere "collateral damage" to be tallied up by so many bean counters.