Agency heads feud, Ken Burns takes the (long) road less traveled with ‘American Buffalo’

The CEO of Endeavor, Ari Emanuel, attacked rival Bryan Lourd, head of the talent agency CAA, at Bloomberg’s Screentime conference. What’s behind the feud?  Documentarian Ken Burns talks about his latest project, The American Buffalo,  his career, financing projects, and controversies, including a recently surfaced photo of him posing along Clarence Thomas and David Koch.