ABC News April 20, 2018

19th anniversary of the Columbine High School massacre

Name: 19th anniversary of the Columbine High School massacre
Uploaded: 2018-04-20T18:58:18
Duration: PT182.0S
Description: ABC News' Clayton Sandell gives an update on National School Walkout Day from Columbine High School.

ABC News' Clayton Sandell gives an update on National School Walkout Day from Columbine High School.

19th anniversary of the Columbine High School massacre

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