PBS’s “The U.S. & the Holocaust” / Artist Lava Thomas / H. Johnson’s Jazz Moment

Filmmakers Lynn Novick and Sarah Botstein tell us about their new Ken Burns documentary on PBS, “The U.S. & the Holocaust.” Plus, artist Lava Thomas examines layers of history in her new exhibition, “Homecoming.” And H. Johnson stops by to teach us about jazz harpist and composer, Dorothy Ashby.