The war on drugs has been the engine of mass incarceration. Drug convictions alone constituted about two-thirds of the increase in the federal prison population and more than half of the increase in the state prison population between 1985 and 2000, the period of our prison system's most dramatic expansion.

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.

I was inspired by what students have done in some schools organizing walkouts protesting the lack of funding and that sort of thing. There are opportunities for students to engage in those types of protests - taking to the streets - but there is also writing poetry, writing music, beginning to express themselves, holding forums, educating each other, the whole range.

... as recently as the mid-1970s, the most well-respected criminologists were predicting that the prison system would soon fade away. Prison did not deter crime significantly, many experts concluded. Those who had meaningful economic and social opportunities were unlikely to commit crimes regardless of the penalty, while those who went to prison were far more likely to commit crimes again in the future.

I think it's important to encourage young people to tell their own stories and to speak openly about their own experiences with the criminal justice system and the experiences of their family. We need to ensure that the classroom environment is a supportive one so that the shame and stigma can be dispelled.

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

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.