Ross travels to El Salvador to meet the "most dangerous gang in the world", MS13 (Mara Salvatrucha), a gang started by migrant Salvadoran youths in urban Los Angeles. In a country with a population smaller than London, there are over 800 murders a year, and MS13 manages to boast over 100,000 members worldwide. Watch the best True Crime documentaries on our channel now! Fancy watching more full length docs? Visit us below: https://www.youtube.com/channel/UC_0r3EheCnp-wVvndYDGviQ