John Lennon’s hope for a more peaceful world defined him even before his exit from The Beatles, yet it was 1969’s“Give Peace a Chance” that marked not only Lennon’s breakout as a solo artist but also the moment where his message became a movement. Besides his wife, Yoko Ono, Lennon turned his standard reply to reporters(“give peace a chance”) into the lyrics for a chart-topping anti-war pronouncement.