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On this day: April 16

Published On: Apr 15 2013 11:35:29 AM CDT   Updated On: Apr 16 2014 01:00:00 AM CDT

LSD's creator drops acid (accidentally) for the first time, Martin Luther King writes his "Letter from Birmingham Jail," The Rolling Stones release their debut album, and tragedy strikes Virginia Tech, all on this day.

OTD April 16 - Virginia Tech
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Rick Wilking/Reuters

2007: In the deadliest shooting incident by a single gunman in American history, Virginia Tech senior Seung-Hui Cho kills 32 and injures 17 at the Blacksburg, Va., university before fatally shooting himself. Six more people were injured when they jumped from second-story windows to escape.

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