I'd say imagine that you wake up one morning when you're going through a midlife crisis. You're getting divorced. Your kids won't speak to you. Their faces are covered with acne, and you have to decide why you should get out of bed. That's the career you should pick. The one that keeps you going no matter what, even if your life is falling apart. That's how I feel about my career.

My producers and I worked with these consultants and came up with seventy [stories] which we think are exemplary of the larger arc of African-American history between 1513 and 2013. We covered half a millennium, and it's amazing.

I don't think the riots derailed the civil rights movement.

Where do real conversations about citizenship occur? In our schools. Think about the things you learned in first grade. "My Country 'Tis of Thee," "I pledge allegiance to the flag," "America the Beautiful."

You had one guy who was a slave, and another who wasn't. And I actually know what happened to them. [Juan ] Garrido ended up getting good jobs and a pension in Mexico which was the center of New Spain, as it was called. Esteban ended up being killed by the Zuni Indians.

We really invented the genre of tracing family trees and going back as far as we could on the paper trail. When the paper trail disappeared, we used DNA analysis. The technology was just being invented that allowed you to trace ancestry through DNA.

I have no plans to slow down.