The War on Marijuana in Black and White, a report published by the American Civil Liberties Union in June 2013, looks at marijuana possession arrest rates and racial disparities among these arrests, as well as the costs of enforcement for all state and counties from 2001 to 2010.  

The FBI’s annual Uniform Crime Report for 2010, in its preliminary findings, reports a 5.5% decrease in violent crime and a 2.8% decrease in property crime nationally (when compared with 2009 figures). And in 2009, these categories were down 5.5% and 4.9%, respectively.