Dave Cullen is the author of the New York Times bestseller Columbine, and the upcoming Soldiers First from HarperCollins.
Susan Klebold, the mother of Columbine shooter Dylan, has a new book.... MORE
Rick Santorum brought back the myth of Columbine martyr Cassie Bernall while defending Kim Davis,... MORE
The only detrimental thing this Missouri defenseman could’ve done to his football career was keep... MORE
Our explanations for why students shoot their classmates are often completely wrong, writes Dave... MORE
As another school shooting rocks Littleton, Colorado, Dave Cullen reveals the secret meeting of... MORE
The suspect in the University of Alabama shootings is extremely unusual in one regard: It's a woman.... MORE