"The nature of the alleged crime and the resulting harm compelled this decision," said Attorney General Loretta Lynch.
Witnesses said a gunman armed with an AR-15 assault rifle killed three people before he died in a shootout with police in Colorado Springs.
On July 22, 2011, right-wing extremist Anders Behring Breivik detonated a bomb in downtown Oslo, killing eight people. PTSD specialist Professor Lars Weisæth took survivors and their families back to the scene to heal.
While it can't be said that the first post–Elliot Rodger killing spree had a female perpetrator—killing sprees are just too common for that—the fact that one of these killers wasn't a dude makes for at least an interesting footnote.
Protests in Egypt descended into carnage this weekend, but you were probably too drunk to notice.