Roger Ross Williams and Kristi Jacobson discuss the documentary, "Take Back the Harbor." Clemency Burton-Hill offers her classical music recommendations for the day. Mike Mariani talks about his recent article in The Atlantic, “American Exorcism.” Beth Comstock expands on her newest book, Imagine It Forward: Courage, Creativity, and the Power of Change. David Roussève discusses his new production, “Halfway to Dawn,” a dance-theater piece about the jazz composer and arranger, Billy Strayhorn. Diarah N'Daw-Spech and Maurice Carney present the 26th annual African Diaspora International Film Festival, which runs through December 9.