"Surenos 13, a primarily Latino gang, and one of the fastest growing gangs" The original meaning of the term Surenos denotes an umbrella of gangs who fall under the control of the Mexican Mafia. The number ‘13’ represents the thirteenth letter of the alphabet, the letter ‘M’. This is used to pay homage to the Mexican Mafia. So let the screams of racism begin from our Mexican friends for even pointing out this fact.