Johnny Green was a footloose slacker who loved punk rock, stumbled into being a roadie for the Sex Pistols, then tripped again into a job pushing sound equipment for the Clash and driving their beat-up van to performances in the mean industrial towns of England. Disaffected youth anointed the Clash as their spokesmen and made the group synonymous with punk itself in the late 1970s. Eventually becoming the band's road manager, Green had a unique vantage...