On this day: March 21

Published On: Mar 18 2013 01:38:04 PM CDT   Updated On: Mar 21 2014 01:00:00 AM CDT

Alcatraz prison closes, Martin Luther King Jr. marches toward Montgomery, the U.S. decides to boycott Moscow's Olympics, and Spielberg nabs his first Oscar, all on this day.

OTD March 21 - Rock Around the Clock
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Columbia Pictures

1956: The movie "Rock Around the Clock," about a concert promoter (played by radio disc jockey Alan Freed) who brings rock 'n' roll to the masses, opens in theaters. The film stars Bill Haley and His Comets and is named after their hit song.

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