“At dusk one day last December, Dr. Esperanza Cerón, the head of the organization, said she noticed two strange men on motorcycles trailing her Chevy sedan as she headed home from work. She tried to lose them in Bogotá’s rush-hour traffic, but they edged up to her car and pounded on the windows. ‘If you don’t keep your mouth shut,’ one man shouted, she recalled in a recent interview, ‘you know what the consequences will be.'” That sounds like an all-too familiar Bogotá scene, but this story is about another white powdery substance. NYT’s Andrew Jacobs And Matt Richtel: She Took On Colombia’s Soda Industry. Then She Was Silenced.