SAO PAULO, BRAZIL - MARCH 15: Anti-government protesters march along Avenida Paulista on March 15, 2015 in Sao Paulo, Brazil. Protests across the country were held today against President Dilma Rousseff's government with many protesters calling for her impeachment. A massive corruption scandal at Brazil's state-owned oil company Petrobras has rocked the government and Dilma's approval ratings are now around 23 percent. (Photo by Victor Moriyama/Getty Images)