Two men who headed the United States in the '60s couldn't be more different. One used race and red-baiting to get ahead. The other was a champion of civil rights and civil liberties. One was a southern conservative, the other was a northern liberal. One was an insider. Each tried to use the other and they ended up running against each other for the nation's ultimate political prize. But together, Lyndon Johnson from Texas and Hubert Humphrey from Minnesota changed American history.