Riot polce take positions during a protest in Sao Paulo, Brazil on June 18, 2013 against a recent rise in public bus and subway fare from 3 to 3.20 reais (1.50 USD). President Dilma Rousseff vowed Tuesday to listen to youths staging Brazil’s biggest protests in 20 years in an outpouring of anger over the huge cost of staging events like the World Cup. AFP PHOTO/Daniel Guimaraens (Photo credit should read Daniel Guimaraens/AFP/Getty Images)

