American terrorism has an almost childish face. The face of a young man who grew up in a working-class neighborhood, with an explosive mixture of Arab and Irish blood flowing through his veins... The face of an African-American girl who grew up in the hell of youth gangs... The face of her friend, mired in drug trafficking and street violence... They are young, angry and ready to act. America is gigantic a melting pot of nations? Or a powder keg that is about to explode? And if this is so, what can be done to prevent the explosion from happening?..