A Great Divide

MSNBC analyst and Salon columnist Joan Walsh looks at the roots of the growing divisiveness in American politics. Mark Helprin tells us about his new novel, In Sunlight and in Shadow. Luisa Weiss discusses her memoir, My Berlin Kitchen, about her transformation through food in Germany. Plus, Liv Ullman reflects on her relationship with Ingmar Bergman and Dheeraj Alkolkar’s new film about it.