Historian and author Adam Hochschild wrote King Leopold's Ghost, To End All Wars, and Bury the Chains. He was a civil rights worker in Mississippi in 1964, a co-founder of Mother Jones, and a writer and editor for Ramparts.
This conversation had a slide presentation given during the first approximately 45 minutes. A PDF of that presentation is available at the following link so that listeners may generally follow along:
http://tns.commonweal.org/new-school/audiofiles/podcast/Adam_Hochschild_Spain_slides.pdf