MSNBC host Lawrence O’Donnell, the author of “Playing with Fire: The 1968 Election and the Transformation of American Politics,” joins the series to provide his insights on the mood of the nation in 1968, the stakes at the Democratic National Convention, and how Americans viewed the violence that erupted in Chicago as well as the trial that followed. He also addresses the many parallels with the political landscape in America today and the year’s protests. Additionally, O’Donnell reflects on his time working with Aaron Sorkin on “The West Wing,” and he shares his thoughts on the writer-director’s unique ability to craft riveting narratives with complex and substantive issues at their center.