High Quality Content by WIKIPEDIA articles! "Mothers of the Disappeared" is a song by rock band U2. It is the eleventh and final track on their 1987 album The Joshua Tree. The song was inspired by lead singer Bono`s experiences in Nicaragua and El Salvador in July 1986, following U2`s involvement on Amnesty International`s A Conspiracy of Hope tour. He learned of the Madres de Plaza de Mayo, a group of women whose children had been "disappeared" by the Argentinean and Chilean dictatorships. While in Central America, he met members of COMADRES, a similar organization whose children had been disappeared by the government in El Salvador. Bono sympathized with the Madres and COMADRES and wanted to pay tribute to their cause.