They argued that these perpetrators have high self-esteem, and that their unwarranted self-esteem causes violence. Baumeister's work suggests that if you teach unwarrantedly high self-esteem to children, problems will ensue. A sub-group of these children will also have a mean streak in them. When these children confront the real world, and it tells them they are not as great as they have been taught, they will lash out with violence. So it is possible that the twin epidemics among young people in the United States today, depression and violence, both come from this misbegotten concern: valuing how our young people feel about themselves more highly than how we value how well they are doing in the world.