Sureños

Sureños ‍, also known as Southern United Raza, Sur 13 or Sureños X3, are groups of loosely affiliated gangs that pay tribute to the Mexican Mafia while in U.S. state and federal correctional facilities. Many Sureño gangs have rivalries with one another, and the only time this rivalry is set aside is when they enter the prison system. Thus, fighting is common among different Sureño gangs even thoug... (Wikipedia)