I think it's critically important for people to understand that this system of mass incarceration governs not just those who find themselves in prison on any given day, but also all those who are in jail, on probation or parole, as well as all those who are just months away from being locked up again because they are unable to find work or housing due to their criminal record.

Many offenders are tracked for prison at early ages, labeled as criminals in their teen years, and then shuttled from their decrepit, underfunded inner city schools to brand-new, high-tech prisons.

Today it is perfectly legal to discriminate against criminals in nearly all the ways that it was once legal to discriminate against African Americans. Once you're labeled a felon, the old forms of discrimination - employment discrimination, housing discrimination, denial of the right to vote, denial of educational opportunity, denial of food stamps and other public benefits, and exclusion from jury service - are suddenly legal.

Defenders of the system will counter by saying this drug war has been aimed at violent crime. But that is not the case. The overwhelming majority of people arrested in the drug war have been arrested for relatively minor, non-violent drug offenses.

Most Americans violate drug laws in their lifetime, but the enemy in this war has been racially defined. Not by accident, the drug war has been waged almost exclusively in poor communities of color, even though studies have consistently shown - for decades - the people of color are no more likely to use or sell illegal drugs than whites.

We must muster the courage, we must find the will, we must do what is necessary to build a truly transformative movement that will end the history and cycle of caste in America.

In response to the advocacy of groups like Mothers Against Drunk Driving, most states adopted tougher laws to punish drunk driving. Numerous states now have some type of mandatory sentencing for this offense - typically two days in jail for a first offense and two to ten days for a second offense. Possession of a tiny amount of crack cocaine, on the other hand, was given a mandatory minimum sentence of five years in prison.