There's a place in the city of Tijuana, Mexico, called El Bordo, which has always been somewhat reminiscent of a post-apocalyptic movie scene. The name comes from "the border," which is where it's located: right by the fence that separates the U.S. from Mexico, among the enormous paved canals that run through Southern California like concrete veins. Hundreds of people live in those canals, often in makeshift tents, the smell of sewage made ripe by the hot Tijuana sun. It's a place where many deportees try to get by. It's also a site of heavy drug use.