streets of shin bone are going to be running with blood. >> the man who shot liberty valance someone described it recently as the greatest american political film. it's about how rerewrite history to fit our mythic needs. >> john wayne actually kills can liberty valance. jimmy stewart gets credit and becomes false and soon after that, wayne is forgotten. >> who was tom donovan? >> eventually stewart tells it the truth and the newspaper man rips up the story and says one of the most famous lines in american film. >> this is the west, sir. when the legend becomes fact, print the legend. >> he's right. >> westerns are cut and dried. good guy wins at the end. it's always for the benefit. there are no regrets and this is john ford, the man who created an the myth of the movie western as much as anyone. questioning it. saying well maybe, the march of civilization, maybe it wasn't all good.