Sunday Bloody Sunday -- Suddenly, U2 entered the political arena with a song which linked Ireland's two Bloody Sundays, 1920 and 1971, with the crucifixion ("The real battle is begun / To claim the victory Jesus won / On a Sunday, bloody Sunday"). The Edge reckons they wrote it naively, without considering the consequences. But it might have caused a more serious backlash if the guitarist had got his way. Unusually he conceived the original lyric as well as the music. It began, "Don't talk to me about the rights of the IRA." He can smile about it now: "My words were pretty clumsy, a polemic. Bono shifted it to being much less political, more of a personal reflection." After Noraid-supporting Irish-Americans misunderstood and began throwing money on the stage when U2 played the song, Bono responded with the introduction: "This is not a rebel song!" When they played it the day after the Enniskillen bombing in 1988, as immortalised by the Rattle And Hum movie, he added a raging "Fuck the revolution!" Sunday Bloody Sunday resulted in enduring opprobrium from Republicans, and prompted a denunciation from Gerry Adams. "Thankfully those days are long gone," says Edge. "We're optimistic about what's been happening."