Pete Seeger was one of the most influential folk musician and singer of the 20th century. He often played with Woody Guthrie and supported a lot of left wing causes. -សតិវ អតុ
From Yahoo News:
With his lanky frame, use-worn banjo and full white beard, Seeger was an iconic figure in folk music who outlived his peers. He performed with the great minstrel Woody Guthrie in his younger days and wrote or co-wrote "If I Had a Hammer," ''Turn, Turn, Turn," ''Where Have All the Flowers Gone" and "Kisses Sweeter Than Wine." He lent his voice against Hitler and nuclear power. A cheerful warrior, he typically delivered his broadsides with an affable air and his fingers poised over the strings of his banjo.
He was kept off commercial television for more than a decade after tangling with the House Un-American Activities Committee in 1955. Repeatedly pressed by the committee to reveal whether he had sung for Communists, Seeger responded sharply: "I love my country very dearly, and I greatly resent this implication that some of the places that I have sung and some of the people that I have known, and some of my opinions, whether they are religious or philosophical, or I might be a vegetarian, make me any less of an American."
He was charged with contempt of Congress, but the sentence was overturned on appeal.