Newtown, Connecticut is a town in mourning in the aftermath of the tragic shooting that took the lives of 20 children and six adults at Sandy Hook Elementary School. Many questions are being asked in the wake of the devastation, especially why the shooter did what he did. A body of research on previous mass murders may provide clues as to what the killers share in their minds. CNN Chief Medical Correspondent Dr. Sanjay Gupta is exploring that story.
“A close look at ten of the most analyzed mass murder cases in history provides some remarkable insight,” Dr. Gupta says. "According to this research published in the journal, Aggression and Violent Behavior, doctors typically start by placing killers into three categories: traumatized, psychotic, psychopathic."
In each case studied, "the killers showed signs of psychotic behavior, severe delusions and paranoia," Dr. Gupta says. "Looking back, none of them had snapped. They had all left clues, pieced together after it was too light. Hindsight.”