Marvel’s “Captain America: The Winter Soldier” premiered in Los Angeles.
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Earmuffs were patented.
Sixteen primary school children and one teacher were killed in a mass shooting in Dunblane, Scotland.
Bill Gates left the Microsoft board after founding the company four decades prior.
Apollo 9 and its crew returned to Earth after a 10-day mission orbiting Earth.
Prolific killer John Wayne Gacy was given the death sentence for the murder of 33 young men and boys.
