There are huge divorces and divides and chasms in black America between the have-gots and the have-nots, between the monied and the poor, between the educated and the non-educated. And there are huge and growing chasms daily. And I want to say that it's not simply about generation. It's about genre.

Hip hop music is important precisely because it sheds light on contemporary politics, history, and race. At its best, hip hop gives voice to marginal black youth we are not used to hearing from on such topics.

It is bad enough to be white and poor; it is worse still to be black, or brown, and female, and young, and poor. Simply said, race makes class hurt more.

I think public intellectuals have a responsibility - to be self-critical on the one hand, to do serious, nuanced work rigorously executed; but to also be able to get off those perches and out of those ivory towers and speak to the real people who make decisions; to speak truth to power and the powerless with lucidity and eloquence.

If I were not African, I wonder whether it would be clear to me that Africa is a place where the people do not need limp gifts of fish but sturdy fishing rods and fair access to the pond. I wonder whether I would realize that while African nations have a failure of leadership, they also have dynamic people with agency and voices.

President Obama's decision not to go to Congress for help in establishing reasonable standards for the continued detention of Guantanamo detainees is a failure of leadership in the project of putting American law on a sound basis for a long-term confrontation with terrorism. It is bad for the country, for national security, and for civil liberties.

Now we teach our leaders that it's your job to put in the systems that enable your people to run your experiments fast and cheap and to keep making them faster and cheaper. Yield as many of your decisions off to the experiment as possible.

As a leader, I believe it's important to have an open door with your staff. Those who want to learn and to grow in their careers will walk through that door and into your life. I encourage people to come and seek me out at 'Frontline' with good ideas, curiosity, and drive.