Overview: Following a deadly brawl between the Hells Angels and Mongols Motorcycle Clubs in 2002, Cavazos came to national prominence. During his reign as the Mongols' president, he expanded the club's membership by recruiting local street thugs with affiliations to the Mexican Mafia. Federal agents say Doc's aim was to take on the Hells Angels and run a massive criminal enterprise engaged in drug running, murder and intimidation. But Doc's power grab came with consequences. During his time in charge, agents with the Bureau of Alcohol, Tobacco, Firearms and Explosives infiltrated the club and piled on the evidence for a federal racketeering indictment. Many Mongols say Cavazos' hunger for fame would be his ultimate downfall and drive him to turn on his brothers.