Guess the 1960s song lyrics #76

1961. This song was written by Pete Seeger and became a huge hit for this folk trio. This trio was once described "the most envied, the most imitated, and the most successful singing group, folk or otherwise, in all show business" and "the undisputed kings of the folksinging rage by every yardstick". They played a large role in ushering in an era of popular folk music. Anti-war song that is now classic.