I wouldn't have known this if I didn't hear it mentioned this morning, but it was on this date (on Good Friday) in 1865 that President Lincoln was assassinated by John Wilkes Booth. Lincoln was shot while watching "Our American Cousin" in the Ford theater.
"Mankind must put an end to war before war puts an end to mankind. War will exist until that distant day when the conscientious objector enjoys the same reputation and prestige that the warrior does today." JFK