Guess the 1960s song lyrics #21

1967. This song is a call for brotherhood and thus an iconic "hippie" song from the era. It has been recorded by various groups and artists. This is the most successful version. In 1967, when this version appeared, it did not sell well, reaching only number 62 on the chart. But two years later – it was used for a brotherhood promotion for a radio station , and after the National Council of Christians and Jews subsequently used the song in television and radio commercials – the track was re-released and cracked the Top 5. So, two years after the initial release, it sold over one million copies and received a gold record.