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Gripping, horrifying, heartbreaking. I learned so much and discovered that the little I thought I knew was nothing but regurgitated, cemented rumors perpetuated by the media and popular culture over the last two decades. Columbine changed school shootings forever and we continue to see the reverberations today. It's an excellently researched and cited account from a journalist who was there and continued to immerse himself in the aftermath over the following decade.