A new report shows a wide racial disparity in arrests for possession of marijuana. According to the American Civil Liberties Union, African Americans are nearly four times as likely to be arrested for marijuana possession than whites. The gap comes despite the fact pot usage amongst whites and blacks is nearly equal. Overall, marijuana possession now accounts for nearly half of all drug arrests. The ACLU concludes: “State and local governments have aggressively enforced marijuana laws selectively against Black people and communities, needlessly ensnaring hundreds of thousands of people in the criminal justice system at tremendous human and financial cost.”