The purpose of this article is to consider four issues that are raised repeatedly by public policy makers, educators, and juvenile justice authorities in seeking ways to prevent youth violence in general and homicidal attacks on schools in particular. The first topic, bullying, has received great attention because many youth involved in school shootings and other violent attacks at school have been victims of bullying. The two boys who carried out the Columbine shootings cast themselves as champions of victims of bullying in their videos and writings, some still available on the Internet. The second topic concerns the influence of entertainment violence, especially violent video games and music. Few topics have generated as much debate and ...