Gary Webb knew his story would cause a stir. The newspaper report he'd written suggested that a US-backed rebel army in Latin America was supplying the drugs responsible for blighting some of Los Angeles's poorest neighbourhoods and, crucially, that the CIA must have known about it. [Webb's report, titled] Dark Alliance" has been called one of the most explosive and controversial exposs in American journalism. Nineteen years on, the story of Webbs investigation and its aftermath has been given the full Hollywood treatment. Kill the Messenger, based on his account of what happened and a book of the same name about the saga by journalist Nick Schou was recently released in cinemas. What Webb did that nobody else had was to follow the supply chain right to the poverty stricken streets of Los Angeles. Webb summed up the heart of his ... series thus: It is one of the most bizarre alliances in modern history. The union of a U.S. backed army attempting to overthrow a revolutionary socialist government and the uzi-toting gangstas of Compton and South-Central Los Angeles. Perhaps most damningly, Webb wrote that crack was virtually unobtainable in the citys black neighbourhoods before members of the CIAs army began supplying it. [In 1999], Webb said that after spending three years of his life looking into it, he was more convinced than ever that the U.S. Government's responsibility for the drug problems in South Central L.A. was greater than I ever wrote in the newspaper.