What has to happen so that we are forced to redefine our idea of childhood? The appearance of thirty-two violent children of unknown origin completely disrupts the life of San Cristóbal, a small tropical city encased between the jungle and the river. Twenty years later, one of its protagonists wrote this luminous Republic, a chronicle woven of facts, evidence and rumors about how the city was forced to reformulate not only its idea of order and violence...

The author of the landmark work On Killing reveals how violent video games have ushered in a new era of mass homicide--and what we must do about it. Paducah, Kentucky, 1997: a 14-year-old boy shoots eight students in a prayer circle at his school. Littleton, Colorado, 1999: two high school seniors kill a teacher, twelve other students, and then themselves. Utoya, Norway, 2011: a political extremist shoots and kills sixty-nine participants in a youth...