The author from the 400,000-copy bestseller On Killing reveals how violent video gaming have ushered in a new era of mass homicide–and what we should do about any of it.

Paducah, Kentucky, 1997: a 14-year-old son shoots eight students inside a prayer group at his college. Littleton, Colorado, 1999: two high school seniors kill a teacher, twelve other learners, and then themselves. Utoya, Norway, 2011: a politics extremist shoots and kills sixty-nine participants in a youth summer time camp. Newtown, Connecticut, 2 about Assassination Era: VIDEO GAMING, Aggression, and the Psychology of Killing 012: a stressed 20-year-old guy kills 20 kids and six adults in the elementary school he once went to.

What links these and additional horrific serves of mass murder? A person’s obsession with video games that educate to kill.

Lt. Col. Dave Grossman, who in his perennial bestseller On Getting rid of revealed that most of us aren’t ‘natural blessed killers’ — and that has spent decades training soldiers, police, and others who keep us secure to conquer the intrinsic human resistance to harming others and to use firearms responsibly when required — becomes a laser focus on the danger posed to your culture by violent video gaming.

Drawing on crime statistics, cutting-edge social study, and scientific studies from the teenage brain, Col. Grossman shows how video gaming that depict antisocial, misanthropic, casually savage behavior can warp your brain — with potentially deadly results. His book will become the concentrate of a new national discussion about video games as well as the epidemic of mass murders that they have unleashed.