Chile's problematic success

Widely regarded as Latin America's most successful economy, Chile finds itself at a crossroads. A rising middle class has brought with it developed country-style challenges, most lately highlighted by student protests turned violent. John Paul Rathbone reports on what the social changes mean for the government and hears from Felipe Larrain, Chile's finance minister, about how the slowing demand for copper - Chile's biggest export - is likely to affect the country's growth.