Welcome to the Club: mass_shootings_LKM_002

Columbine high school mass shooting survivors Heather Martin, left, and retired Columbine principal Frank DeAngelis check to see if there are still objects left in the room from 20 years ago, where Martin barricaded herself with dozens of other students during the shooting as she, DeAngelis and a handful of survivors tour the school March 17, 2018 in Colorado, US.

Columbine high school mass shooting survivors Heather Martin, left, and retired Columbine principal Frank DeAngelis check to see if there are still objects left in the room from 20 years ago, where Martin barricaded herself with dozens of other students during the shooting as she, DeAngelis and a handful of survivors tour the school March 17, 2018 in Colorado, US.