Although there will always be protest / political music around, for the mainstream it went away with disco and 70's rock: People were sick of Nixon and VietNam, tie-dyes, flannel shirts and granola, and wanted to party . . . . . and they did. And ironically, disco saved bass playing: Never before was bass/kick drum thrown that far forward in the mix, and saved us from a sequenced, keyboard bass-only world.