Mara Salvatrucha also known as MS, Mara, and MS-13 is one of the world's most ruthless gangs. They are estimated to become even more of a threat than the mafia as the country's most organized criminal network. Most of the members have tattoos in order to identify themselves with the gang. This is an intimate group of people so differential association may be applied. Favorable definitions for being and maintaining member status in this gang outnumbers unfavorable definitions. One of the biggest factors is that if they remain loyal to the gang and its members, their life will not be at stake. They express their passion and loyalty-their art- through their tattoos.