São Paulo's population of over 10 million inhabitants makes it the world's fourth-largest city. Many of the inhabitants dwell in slums with no sanitation and high crime rates. Mayor Marta Suplicy has a vision to "help the people excluded from everything that we have in the city." But exclusion is at the heart of the way urban life operates. Nowhere is this more obvious than on the streets of São Paulo, where the super-rich cohabit alongside the desperately poor. Poor living conditions do not deter those desperate for the opportunities that only the city can offer.