For viewers of The Wire, this is a familiar world: stoops silhouetted in the glare of orange sunsets, ominous-looking rowhouses whose boarded-up windows loom over shattered streets and scrubland like blinded eyes, the people beneath them speaking in thick accents and enjoyably inventive slang. Danger is ever-present: we hear of two deaths and the injury of a six-year-old child during the two-year period the film covers, while the police pursue the bikers by helicopter for fear of causing disastrous collisions.