Jackson C Frank , Don't Look Back "Can't you hear the bells of Selma" dedicated to civil rights organizer Medgar Evers .His murder in 1963 and the all-white-jury trials that resulted in acquittals for the main suspect inspired the marches. https://www.google.com/search?q=Jackson+C+Frank+%2C+Don%27t+Look+Back&rlz=1C1CHBD_enIE889IE897&oq=Jackson+C+Frank+%2C+Don%27t+Lo