The United States does have the highest rate of incarceration in the world dwarfing the rates of even highly repressive regimes like Russia, China or Iran. This reflects a radical shift in criminal justice policy, a stunning development that virtually no one - not even the best criminologists - predicted forty years ago.

A massive new penal system has emerged in the past few decades - a penal system unprecedented in world history. It is a system driven almost entirely by race and class.

For African American children, in particular, the odds are extremely high that they will have a parent or loved one, a relative, who has either spent time behind bars or who has acquired a criminal record and thus is part of the under-caste - the group of people who can be legally discriminated against for the rest of their lives. For many African American children, their fathers, and increasingly their mothers, are behind bars. It is very difficult for them to visit. Many people are held hundreds or even thousands of miles away from home.

Black men in ghetto communities (and many who live in middle class communities) are targeted by the police at early ages, often before they're old enough to vote. They're routinely stopped, frisked, and searched without reasonable suspicion or probable cause.

The mass criminalization of white men would disturb us to the core.

Our system of mass incarceration is better understood as a system of racial and social control than a system of crime prevention or control.

More than 2 million people found themselves behind bars at the turn of the twenty-first century, and millions more were relegated to the margins of mainstream society, banished to a political and social space not unlike Jim Crow, where discrimination in employment, housing, and access to education was perfectly legal, and where they could be denied the right to vote.