Jazz, ethics and politics come together in a book by Penny M Von Eschen called Satchmo Blows Up the World: Jazz Ambassadors Play the Cold War, which tells the story of the State Department-sponsored jazz tours of the 1950s. It's fascinating to read how musicians like Dizzy Gillespie and Benny Goodman responded quite differently to the US government's policy of using them to promote national interests abroad; e.g. by falsely depicting the US as a racially harmonious society.