A performer dances during Salgueiro performance at the Rio de Janeiro Carnival at Sambodromo on February 26, 2017 in Rio de Janeiro, Brazil. (Photo by Raphael Dias/Getty Images)

A demonstrator attends a protest against fare hikes for city buses in Rio de Janeiro January 16, 2015. Amid a marked economic downturn and high inflation, bus fares went up in Sao Paulo, Brazil's largest city, from 3 to 3.50 reais, and in Rio, the former capital, from 3.0 to 3.40 reais. (Photo by Mauro Pimentel/Reuters)

Photo taken on November 5, 2015 shows flood in Bento Rodrigues, a town in the southeastern Brazilian state of Minas Gerais, after a dam at a mining waste site burst early Thursday. An iron ore tailings dam in the southeast Brazilian state of Minas Gerais collapsed Thursday, killing at least 15 people, according to local media reports. (Photo by Agencia Estado/Xinhua Press/Corbis)

Demonstrators wear masks depicting Brazil's former president Luiz Inacio Lula da Silva (R) and Brazil's President Dilma Rousseff (L) as they take part in a protest calling for the impeachment of Rousseff at Paulista Avenue in Sao Paulo, Brazil, December 13, 2015. (Photo by Nacho Doce/Reuters)

Brazilian farmer Jander Santos de Souza (R) checks his corn plantation which is inundated with floodwaters from the Solimoes River, in the rural municipality of Manacapuru, Amazonas state May 5, 2015. According to the association of farmers in the community, about 70 percent of the agricultural production was lost due to the flooding. (Photo by Bruno Kelly/Reuters)

Members of the Uniao da Ilha do Governador Samba School perform during the first day of the Special Group Samba Schools parade of Carnival at the Sambadrome in Rio de Janeiro, Brazil, 07 February 2016. (Photo by Luiz Eduardo Perez/EPA)

Brazilians in favor of the impeachment of President Dilma Rousseff demonstrate as the Lower House of Congress voted over her impeachment in Brasilia, Brazil April 17, 2016. The sign reads, “The people want justice. Prison for the corrupt”. (Photo by Adriano Machado/Reuters)

A dog swims as a resident navigates his boat in a neighbourhood flooded by the Purus river, which continues to rise from days of heavy rainfall in the region, in Boca do Acre, Amazonas state March 14, 2015. According the state civil defense, more than 20,000 people have been left homeless along the Purus river, where incessant rains have flooded the area and caused the river to burst their banks. (Photo by Bruno Kelly/Reuters)