"This report represents a compilation and new analysis of data on the incidents, prevalence, and consequences of violent crime among American Indians. The report uses data from a wide variety of sources, including statistical series maintained by the Bureau of Justice Statistics (BJS), the Federal Bureau of Investigation (FBI), the Bureau of Prisons (BOP), and the U.S. Census Bureau. The findings reveal a disturbing picture of the victimization of American Indians and Alaska Natives. The rate of violent crime estimated from self reported victimizations for American Indians is well above that of other U.S. racial or ethnic groups and is more than twice the national average. This disparity in the rates of exposure to violence affecting American Indians occurs across age groups, housing locations, and by gender."
United States Bureau of Justice Statistics: http://bjs.ojp.usdoj.gov/