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PBS News Hour
Twenty years after Columbine, what's changed and what hasn't
Today marks 20 years since the Columbine High School shooting near Denver, Colorado, where two students killed 12 classmates and a teacher before turning their guns on themselves. As members of the community gathered Saturday for a day of remembrance, Dave Cullen, who wrote a book about the massacre, joined Hari Sreenivasan to talk about what’s changed, and what hasn’t, since Columbine.
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