A woman looks over the stories of the slain before a vigil at the memorial for the victims of the massacre at Columbine High School nearly 20 years ago Friday, April 19, 2019, in Littleton, Colo. (AP Photo/David Zalubowski)
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A woman looks over the stories of the slain before a vigil at the memorial for the victims of the massacre at Columbine High School nearly 20 years ago Friday, April 19, 2019, in Littleton, Colo. (AP Photo/David Zalubowski)
