The plot of The Joshua Tree is essentially an immigrant's tale: Four guys from Ireland set off to find America, and what they discovered left them both invigorated and outraged. While the lyrics to U2's 1987 opus give voice to their ever-expanding social conscience, the roots of The Joshua Tree are planted
This article originally appeared on www.rollingstone.com: U2’s ‘The Joshua Tree’: 10 Things You Didn’t Know