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Deadly school shootings in U.S. history

Published On: Apr 02 2012 04:44:44 PM CDT   Updated On: Oct 21 2013 01:28:32 PM CDT

With today's deadly school shooting in Nevada, look back at other major school shootings in U.S. history.

Sandy Hook children evacuating
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Newton Bee

Dec. 14, 2012: Gunman Adam Lanza massacred 20 first-graders and six staff members at Sandy Hook Elementary School in Newtown, Conn. He shot his mother to death before going to the school, and killed himself as authorities arrived.

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