We've got Professor Matt Karp of Princeton on to discuss his new Catalyst article on "The Mass Politics of Antislavery," his first preview of a new book on the history of the 1850s that is in progress. Then we turn to the debate about Bernie, Warren, and the upper-middle class, starting with another article: "A Socialist Party in Our Time?" by Abbott and Guastella.

Check out his book This Vast Southern Empire here.