Clint Eastwood shares a story where director Don Siegel suggested he would have a villain shot in the back, prompting an angry refusal from John Wayne, who declared, "I don't care what that kid would have done, I don't shoot people in the back!" Eastwood uses this story to illustrate the stark moral differences between the traditional, noble heroes John Wayne played and the ambiguous anti-heroes common in the "spaghetti Westerns" Eastwood popularized. Credit: @nbcuniversal | History In Pictures