Sources: This American Life [blog], [transcript], [podcast]
quote: However, when China correspondent for the public radio program Marketplace, Rob Schmitz, who lives in Shanghai, he immediately became suspicious. Elements of the report didn't stack up. It was the little details that clued in Mr. Schmitz and sent of his sense of danger. For example Mr. Daisey claimed in his monologue that security guards at the plant carried guns -- something Mr. Schmitz new was illegal in China. In China only the police and army can carry guns in public, under threat of stiff penalties.
quote: The guns did not have guards.