This report from the U.S. Department of Justice is not about violence prevention, but it is included here because it presents statistics on firearm violence. Despite the common perception that gun violence is an ever-increasing phenomenon, the report notes that firearm-related homicides decreased 39% from 1993 to 2011. In addition, it states that school-related homicides of youth between the ages of 5 and 18 decreased from an average of 29 per year in the 1990s to an average of 20 in the first decade of this century (a decline of 31%).