School shootings scare everyone, even those not immediately affected. They make national and international news. They make parents afraid to send their children off to school. But they also lead to generalizations about those who perpetrate them. Most assumptions about the perpetrators are wrong and many of the warning signs are missed until it’s too late. Here, Peter Langman takes a look at 48 national and international cases of school shootings in order to dispel the myths, explore the motives, and expose the realities of preventing school shootings from happening in the future, including identifying at risk individuals and helping them to seek help before it’s too late.

In the horrific aftermath of school shootings, distraught communities struggle to make sense of these seemingly senseless acts. Despite massive media coverage, we know little about what drives young perpetrators or how they rationalize their acts. In this breakthrough analysis, Dr. Peter Langman presents the psychological causes of school shootings and offers unprecedented insight into why certain teens exhibit the potential to kill. He shows how to identify early signs of possible violence and offers preventative measures that parents and educators can take to protect their communities.

"Groundbreaking." ―Rachel Louise Snyder, bestselling author of No Visible Bruises An examination of the phenomenon of mass shootings in America and an urgent call to implement evidence-based strategies to stop these tragedies Winner of the 2022 Minnesota Book Award Using data from the writers’ groundbreaking research on mass shooters, including first-person accounts from the perpetrators themselves, The Violence Project charts new pathways to prevention and innovative ways to stop the social contagion of violence. Frustrated by reactionary policy conversations that never seemed to convert into meaningful action, special investigator and psychologist Jill Peterson and sociologist James Densley built The Violence Project, the first comprehensive database of mass shooters. Their goal was to establish the root causes of mass shootings and figure out how to stop them by examining hundreds of data points in the life histories of more than 170 mass shooters—from their childhood and adolescence to their mental health and motives. They’ve also interviewed the living perpetrators of mass shootings and people who knew them, shooting survivors, victims’ families, first responders, and leading experts to gain a comprehensive firsthand understanding of the real stories behind them, rather than the sensationalized media narratives that too often prevail. For the first time, instead of offering thoughts and prayers for the victims of these crimes, Peterson and Densley share their data-driven solutions for exactly what we must do, at the individual level, in our communities, and as a country, to put an end to these tragedies that have defined our modern era.

Warning Signs provides practical, research-based guidance on anticipating and preventing school shootings.

Once, a shooter walked alone through the front doors of an unsuspecting high school in Burke, Virginia. He was young. Troubled. Tormented. Drowning in a cavernous abyss so deep that light itself seemed no longer to exist. It is an all-too-familiar story these days. After all, once a shooter enters a school or another public space, chaos always follows. Or does it? Once A Shooter chronicles the astonishing story of TJ Stevens, a suicidal high school gunman who unexpectedly experiences a miraculous transformation in the exact moment he is about to execute nine hostages and then himself. All author royalties will be donated to a charity that hosts events for troubled teens.

In the last decade, school shootings have decimated communities and terrified parents, teachers, and children in even the most “family friendly” American towns and suburbs. These tragedies appear to be the spontaneous acts of disconnected teens, but this important book argues that the roots of violence are deeply entwined in the communities themselves. Rampage challenges the “loner theory” of school violence and shows why so many adults and students miss the warning signs that could prevent it.