Some songs have more widely contextualised narratives, including references to the "evil presidentes" working for the "clampdown", the lingering effects of the Spanish Civil War ("Spanish Bombs"), and how constant consumerism had led to unavoidable political apathy ("Lost in the Supermarket"). "London Calling", the album's title track and opener, was partially influenced by the March 1979 accident at a nuclear reactor at Three Mile Island in Pennsylvania. It also discusses the problems of rising unemployment, racial conflict and drug use in Great Britain. According to music critic Tom Carson, "while the album draws on the entirety of rock and roll's past for its sound, the concepts and lyrical themes are drawn from the history, politics and myths associated with the genre".