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TV's Most Memorable Moments

14 of 21

No. 8: Columbine School Shooting

This April 28, 1999 file photo shows an unidentified woman with 15 crosses posted on a hill above Columbine High School in Littleton, Colo. Wednesday, April 28, 1999 in remembrance of the 15 people who died during a school shooting on April 20.

(AP Photo)

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.

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