El Salvador has a population of a little more than 6 million people, less than New York City. But the violence in the small Central American country is out of control. It has a murder rate 22 times higher than that of the United States. Much of the blame lies with the country’s two main gang groups, Mara Salvatrucha (MS-13) and Barrio 18. The rival groups are constantly warring with each other in turf battles, with the people of El Salvador caught in the middle. On this edition of Global