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Students stage walkout on Columbine anniversary
Students stage walkout on anniversary of Columbine shooting
Students Walk Out On 19th Anniversary Of Columbine Shooting
Students walk out on Columbine anniversary
Student Walkouts Mark Anniversary Of Columbine Shootings
Students walk out of school to call for gun control on Columbine anniversary
Students plan to walk out of schools on Columbine anniversary
Philly Students Join Together For Gun Reform Walkout On Columbine Anniversary
Students Participate In School Walkouts On Columbine Anniversary
North Texas students walk out on Columbine anniversary
Nashville Students Walk Out On Columbine Anniversary
Students to walk out of class Friday on Columbine's anniversary
