- [Voiceover] Now streaming on the PBS app, the definitive collection of documentaries from award-winning filmmaker Ken Burns. (dramatic music) Discover over 40 groundbreaking films that bring our history to life. (cheerful jazzy music) - Muhammad Ali was the most important man in the world. - [Crowd] Ali! Ali! - [Narrator] His magnetism just was amazing. Who is this guy? - [Commentator] He was a revolutionary. He was a ground breaker. - What are you gonna say about that now, huh? (bell tolls) - The price of freedom comes high. I have paid, but I am free. (sweeping guitar music) - [Narrator] I hate the myth of Hemingway. It obscures the man. - His talent is stunning. - He went against the grain. - [Narrator] It's hard to imagine a writer who hasn't been influenced by him. - In order to have something new to write he had to have something new to live. (artillery gun fires) - [Narrator] And he fell in love quite a few times. - He's complex and deeply flawed, but there he is. Hemingway, the man, is much more interesting than the myth. (inspirational music) - The American identity begins when Benjamin Franklin knit the American colonies together. - [Narrator] Franklin is endlessly interesting. - [Commentator] Printer, scientist, revolutionary. - He is the only founding father who evidently had a sense of humor. - His vision is broader than the American Revolution. - The things that he spoke of, that he wrote about had a certain amount of power. - He really was an American genius. (suspenseful music) - [Narrator] Even though the Holocaust took place in Europe, it is a story that Americans have to reckon with too. - The primary goal is get to the United States. - The door was not quite open. (dramatic music sustains) - Rule changes make it even harder for refugees to get in. - We are a good people but that's not all there is to this story. - Stream the Ken Burns Collection now with Passport.