Were the Tsarnaev Brothers Like Columbine Killers Eric Harris and Dylan Klebold?
Understanding Sam Hengel, the Gunman at Marinette High School
Decoding the confession of Joseph Stack.
As the Columbine assault raged, students barricaded a classroom and fought to keep a wounded teacher alive.
Columbine killer Eric Harris plans the massacre.
The Four Most Important Lessons of Columbine
Was Cho a psychopath, a depressive, or a psychotic?
At Last We Know Why the Columbine Killers Did It
The Air Force Academy’s show trial.