For children, the era of mass incarceration has meant a tremendous amount of family separation, broken homes, poverty, and a far, far greater level of hopelessness as they see so many of their loved ones cycling in and out of prison. Children who have incarcerated parents are far more likely themselves to be incarcerated.

Arguably the most important parallel between mass incarceration and Jim Crow is that both have served to define the meaning and significance of race in America. Indeed, a primary function of any racial caste system is to define the meaning of race in its time. Slavery defined what it meant to be black (a slave), and Jim Crow defined what it meant to be black (a second-class citizen). Today mass incarceration defines the meaning of blackness in America: black people, especially black men, are criminals. That is what it means to be black.

Discrimination in public benefits is also perfectly legal. Under federal law, people convicted of drug felonies are deemed ineligible even for food stamps.

Nationwide, 1 in 3 black men can expect to serve time behind bars, but the rates are far higher in segregated and impoverished black communities.

It's important to teach students about the reality of the system, that it is in fact the case that they are being targeted unfairly, that the rules have been set up in a way that authorize unfair treatment of them, and how difficult it is to challenge these laws in the courts. We need to teach them how our politics have changed in recent years, how there has been, in fact, a backlash. But we need to couple that information with stories of how people in the past have challenged these kinds of injustices, and the role that youth have played historically in those struggles.

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.

Private prison companies are now listed on the New York Stock exchange and are doing quite well in a time of economic recession (and depression in some communities). But that's just the tip of the iceberg.