What John Lennon/Yoko Ono Vietnam War protest song was covered by The Incredible Penguins to support research on little penguins?
Happy Xmas (War Is Over):  Also a protest song against the Vietnam War, "Happy Xmas (War Is Over)" has since become a Christmas standard, frequently covered by other artists, appearing on compilation albums of seasonal music, and named in polls as a holiday favourite.
i don't know