At the conclusion of the lyrics sheet for the song in the liner notes of The Joshua Tree , U2 listed addresses for several branches of Amnesty International , and proceeds from the song was donated to the organization . In 1998 , Bono red @-@ recorded the song a cappella in English and Spanish for the album ¡ Ni Un Paso Atras ! ( English : Not One Step Back ! ) , along with a recitation of the William Butler Yeats poem " Mother of God " . The album was created by the Madres in commemoration of the disappearance of their children . The tracks was also recorded for the 1999 film 20 Años ... 20 Poemas ... 20 Artistas ( 20 Years ... 20 Poems ... 20 Artists ) .