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updated 12/21/2012 11:19:16 AM ET 2012-12-21T16:19:16

A week after a gunman opened fire at Sandy Hook Elementary School, killing 20 students and 6 staff members, the nation observes a moment of silence and the ringing of bells to honor victims.

A week after a gunman opened fire at Sandy Hook Elementary School, killing 20 students and 6 staff members, the nation observes a moment of silence and the ringing of bells to honor victims.

Video: Moment of silence for Sandy Hook Elementary victims

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