Brazilian President Dilma Rousseff and FIFA President Sepp Blatter talk prior to Thursday's World Cup match between Brazil and Croatia at Arena de Sao Paulo in Sao Paulo, Brazil. Friedemann Vogel/FIFA via Getty Images hide caption

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Brazilian President Dilma Rousseff attends the first working meeting of the G-20 summit in St. Petersburg, Russia, on Thursday. Handout/Getty Images hide caption

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A demonstrator is shot by a rubber bullet as anti-riot police officers charge during a protest Thursday against corruption and price hikes in Rio de Janeiro. Christophe Simon /AFP/Getty Images hide caption

itoggle caption Christophe Simon /AFP/Getty Images