The Armenian genocide of 1915.

Genghis Khan leaving minarets of human skulls in the villages he conquered.

"Pickett's Charge," the insanely suicidal artillery assault of 1863 that left 1,200 dead and effectively lost the Civil War for the South.

The Defenestration of Prague in 1618, when Protestants threw some Catholic noblemen out a third-story window of the Bohemian Chancellery, but they survived because they landed in a huge pile of horse manure. At the time, the Catholics attributed their survival to divine intervention.