Maria Victoria Agostinho, 5, walks outside her home in the Vila Autodromo area of Rio. Her family is slated for eviction, along with others in the area, to make way for building projects related to the 2016 Summer Olympics. Lianne Milton for NPR hide caption

itoggle caption Lianne Milton for NPR

A demonstrator confronts riot policemen during an anti-government protest in Caracas, Venezuela's capital, on Feb. 22. Raul Arboleda/AFP/Getty Images hide caption

itoggle caption Raul Arboleda/AFP/Getty Images

Clara Rojas waves as she arrives at an airport near Caracas, Venezuela, on Jan. 10, 2008, after being released from six years of captivity by Colombian rebels. Gregorio Marrero/AP hide caption

itoggle caption Gregorio Marrero/AP

Chicago is the heroin hub for the Midwest, with cartels often using stash houses in quiet, residential neighborhoods like this one on the city's Southwest Side. Bill Healy/WBEZ hide caption

itoggle caption Bill Healy/WBEZ