Cesar Vladimir Montoya Climaco, a member of El Salvador's Barrio 18 gagn, stands in front of a wall, handcuffed,  after his arrest in San Salvador, July 28, 2015. (AP Photo/Salvador Melendez)

El Salvador’s unstoppable gangs

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...