Violent drug gangs rule the vast slums, or favelas, that are home to nearly a fifth of Rio de Janeiro's population. Away from the slums, the city's beaches, Carnival, and scenery attract tourists from around the world. Foreign businesses are drawn here because of abundant energy supplies.
Violent drug gangs rule the vast slums, or favelas, that are home to nearly a fifth of Rio de Janeiro's population. Away from the slums, the city's be...