New studies show racial disparities in drug arrests are continuing to rise. According to Human Rights Watch, black men are nearly twelve times as likely to be imprisoned for drug convictions as white men, even though whites commit more drug-related crimes. Black women are five times as likely to see prison time for drug crimes than white women. According to the Sentencing Project, since 1980 the rate of drug arrests for blacks has increased by 225 percent, compared to 75 percent for whites.