Fifty years ago today an African-American Baptist church in Birmingham, Alabama was dynamited by members of a Klan group. Four girls died, ages 14 and 11, with many others injured.
Joan Baez sings this song written by Richard Fariña (her brother-in-law) to commemorate the attack.
Read more in this Wikipedia article: http://en.wikipedia.org/wiki/16th_Street_Baptist_Church_bombing