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Victims family leave a firehouse staging area following a shooting at the Sandy Hook School in Newtown, Conn. where authorities say a gunman opened fire, leaving 27 people dead, including 20 children, Friday, Dec. 14, 2012. (AP Photo/Jessica Hill)

Victims family leave a firehouse staging area following a shooting at the Sandy Hook School in Newtown, Conn. where authorities say a gunman opened fire, leaving 27 people dead, including 20 children, Friday, Dec. 14, 2012. (AP Photo/Jessica Hill)

Sandy Hook school shooting

Yahoo NewsDecember 18, 2012

A man opened fire Dec. 14, 2012, inside the Sandy Hook, Connecticut elementary school where his mother worked as a teacher, killing 26 people, including 20 children, as youngsters cowered in their classrooms and trembled helplessly to the sound of gunfire reverberating through the building.

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