After El Mencho: A Data-Driven Look at an Evolving Drug Market El Mencho was dead. Nemesio Oseguera had been killed on February 22 by Mexican authorities in dramatic fashion, and we at InSight Crime had written more than a few articles. But I felt like the story had only been partially told. After all, the group he ran—the Jalisco Cartel New Generation, or CJNG, as it is known for its Spanish acronym—had revolutionized the production and distrib…