Description:He was an outspoken critic of one war, but a hero in another. He was a leading Democrat who came from Republican roots. He was a politician who cared more about being on the right side of an issue than on the popular side.
George Stanley McGovern -- a staunch liberal who served South Dakota in the U.S. Senate and House for more than two decades and who ran unsuccessfully as the Democratic Party nominee for president in 1972 -- died Sunday at the age of 90, his family said.(2:56)