Most prisoners in the USA are black or Hispanic:

Above images are from http://www.november.org/graphs and are in the public domain according to that page. It says: "These graphs are in the public domain."
To learn more about institutional racism use these Google search shortcuts:
http://www.google.com/search?q=institutional-racism and
http://www.google.com/search?q=institutional-racism+drug-war
Most cannabis and drug reform organizations are in denial about the full extent of drug war racism, and especially about the institutional racism of their organizations, members, focus, forums, website, etc.. There is little focus, research, and few forums on the racism of the drug war.
Racists often post freely on most reform forums. Many more posters are unconsciously racist, sexist, bigoted, stereotyping, and ignorant of other cultures in general.
CannabisCulture.com forum threads on institutional racism of drug war and reformers.
http://www.cannabisculture.com/forums/showflat.php?Number=981425 and
http://www.cannabisculture.com/forums/showflat.php?Number=980803 and
http://www.cannabisculture.com/forums/showflat.php?Number=971673 and
http://www.cannabisculture.com/forums/showflat.php?Number=961963 and
http://www.cannabisculture.com/forums/showflat.php?Number=980142 and
http://www.cannabisculture.com/forums/showflat.php?Number=974281 and
http://www.cannabisculture.com/forums/showflat.php?Number=959321

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DRCNet. Sentencing: Racial Disparities in Drug Sentences the Norm in the Nation's Most Populous Counties, Study Finds. See link.

Images below are from: http://www.november.org/graphs and are in the public domain according to that page. It says: "These graphs are in the public domain."

The above chart may take some deciphering for some people. Blue column is percent (%) of "Illicit Drug Users in America." Red column is percent (%) of "Drug War Prisoners in America." So according to the chart around 57 percent of the drug war prisoners in America are black, even though blacks are only around 11 percent of the "Illicit Drug Users in America."

"Although African Americans comprise only 12.2 percent of the population and 13 percent of drug users, they make up 38 percent of those arrested for drug offenses and 59 percent of those convicted of drug offenses causing critics to call the war on drugs the 'New Jim Crow.' " -- Emphasis added. This info was on the web page as of November, 2004. The "convicted" percentage of 59% may refer to both jail and prison. The 74 percent "sent to prison" in the quote below may not include people sent to jail.
http://www.drugpolicy.org/race

"Blacks constitute 13 percent of all drug users, but 35 percent of those arrested for drug possession, 55 percent of persons convicted, and 74 percent of people sent to prison.(1) ... Notes: 1. Human Rights Watch Report: Punishment and Prejudice: Racial Disparities in the Criminal Justice System, May 2000 Vol. 12, No. 2 (G)." -- Emphasis added.
http://www.hrw.org/reports/2000/usa and
http://www.drugpolicy.org/race/criminaljust

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"At home our criminal justice system, being increasingly driven by the corporate prison industry that wants ever more customers, grossly discriminates against minorities and is greatly distorted by the extremely expensive and failed war on drugs." ...

"After looking at my evidence printed in Britain, the Civil Rights Commission said the issue is not the count of the votes in Florida – the issue is the no-count. What the commission meant by the no-count is that it looks like maybe 100,000 people, at least 80,000 people, most of them black, were not permitted to vote who had a legal right to vote in Florida. ... A few months before the election, Katherine Harris’ office used computer systems to make up a list of people to purge from the voter rolls of people who were supposedly felons – people who committed serious crimes and therefore in Florida were not allowed to vote. We now know those lists were as phony as a three-dollar bill. That maybe approximately 90% of the people on those lists, and there were 57,700 people on that list, approximately 90% were not felons and had the right to vote. Surprise, surprise. At least 54% of the names on that list were black."

*Reparations/World Conference Against Racism : San Francisco Indymedia.
http://sf.indymedia.org/wcar/

*Campaign to End Race Discrimination. The Lindesmith Center - Drug Policy Foundation.
http://www.drugpolicy.org/news/race_conf.html