On the evening of February 18, 1965, author and civil-rights activist, James Baldwin, and conservative magazine founder, William F. Buckley, Jr., squared off for a debate on race in America, a discussion that still resonates nearly 55 years later. The lives of the two cultural giants and the debate itself are the subjects of a new book, "The Fire is Upon Us," penned by political scientist Nicholas Buccola. NewsHour Weekend's Zachary Green sat down with Buccola to talk about the lives of Baldwin and Buckley and how their debate is still playing out today in America.