Devanil De Souza Jr. looks out over the recently pacified Santa Marta, one of Rio's oldest favelas. Arrival City points to Santa Marta as a migrant community that has been integrated into the larger city (and economy), as the state recently gave its residents the same benefits (street names, birth certificates, soccer fields, WiFi, garbage collection, etc.) that wealthier residents enjoy. Spencer Platt/ Getty Images hide caption

itoggle caption Spencer Platt/ Getty Images

Sarah Vowell has written several books on American history and culture, and was a contributing editor for the radio program This American Life from 1996–2008. Bennett Miller/ hide caption

itoggle caption Bennett Miller/