Political and social concerns were the basis for several tracks. Bono wrote the lyrics for "Bullet the Blue Sky" after visiting El Salvador during the Salvadoran Civil War and witnessing how the conflict between rebels and the US-backed government affected local civilians. During the mid-song spoken passage, he talks of a man with a "face red like a rose on a thorn bush", a reference to Reagan. Bono's trip also inspired "Mothers of the Disappeared", after he met members of COMADRES—the Mothers of the Disappeared—a group of women whose children were killed or "disappeared" during the civil war at the hands of the local government. The 1984 UK mining strike inspired the lyrics for "Red Hill Mining Town", which Bono wrote from the perspective of a couple affected by the strike. The story of a heroin-addicted couple was the basis for "Running to Stand Still", which Bono set in the Ballymun Flats residential towers in Dublin near which he was raised. The buildings are referenced in the lyric "I see seven towers / But I only see one way out". For "Where the Streets Have No Name", he wrote the lyrics in response to the idea that, in Belfast, a person's religion and income can be deduced based on the street they live on. "Exit" portrays the thoughts of a psychotic killer, although Clayton suggested that the line "He saw the hands that build could also pull down" is also a jab at the US government's conflicting roles in international relations.