Next week, the 'beautiful game' is coming home. Brazil, the most successful nation in football history, is hosting the 2014 World Cup. But the build-up has been overshadowed by violent protests against the spiralling cost of staging the tournament. In a country where a quarter of the population live in extreme poverty, there's widespread anger at what's perceived as the increasing divide between the rich and poor. The multi-million pound new stadiums sit alongside an epidemic of drug addiction and child prostitution. Tonight Panorama reveals the shame of a country where children as young as 12 sell their bodies for the price of a soft drink, where drug cartels control whole swathes of city centres and where the poor are feeling more dispossessed than ever before.