Bono writes the lyrics for almost all U2 songs , which often have social and political themes . His lyrics frequently allude to a religious connection or meaning , evident in songs such as " Gloria " from the band 's album '' October '' and " I Still Have n't Found What I 'm Looking For " from '' The Joshua Tree '' . During the band 's early years , Bono was known for his rebellious tone which turned to political anger and rage during the band 's '' War '' , '' The Joshua Tree '' and '' Rattle and Hum '' eras . Following the Enniskillen bombing that left 11 dead and 63 injured on 8 November 1987 , the Provisional IRA paramilitaries threatened to kidnap Bono . IRA supporters also attacked a vehicle carrying the band members . These acts were in response to his speech condemning the Enniskillen bombing during a live performance of " Sunday Bloody Sunday " . The singer had been advised to cut his on-stage outburst from the '' Rattle and Hum '' film , but it was left in . Also featured in the film is footage of Bono spray-painting a monument during an outdoor performance ; Bono was forced to pay a fine
Enniskillen bombing
Remembrance Day bombing
Bono