YARMOUTH, ME – APRIL 20: A little over 100 North Yarmouth Academy students from the middle and upper school line Main Street in Yarmouth during a student-organized silent walkout that lasted for 13 minutes to honor the 13 lives lost in the Columbine shooting on April 20, 1999. The walkout was in support of ending gun violence in schools. (Staff photo by Brianna Soukup/Staff Photographer)

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