Mexico took down its most powerful cartel boss and within hours, parts of the country were on fire. On Sunday, Mexico’s army killed Nemesio Oseguera Cervantes, popularly known as 'El Mancho', the leader of the Jalisco New Generation Cartel, during an operation in Jalisco state. He was one of the most wanted drug traffickers in the world. Officials are calling this the biggest cartel takedown since El Chapo was recaptured nearly a decade ago. But the fallout was immediate.