Supporters of Brazilian President Jair Bolsonaro pose in front of a billboard depicting Justice Minister Sergio Moro as they demonstrate along Paulista Avenue in Sao Paulo on May 26, 2019 to shore up the ultraconservative government as it faces growing opposition, while marches are planned across Brazil. - Bolsonaro, who took power in January on a promise to revive Latin America's biggest economy, has seen his popularity plunge as rising unemployment and education spending freezes fuel opposition to his administration, which is plagued by infighting. (Photo by Nelson ALMEIDA / AFP)

Smokes rises from forest fires in Altamira, Para state, Brazil, in the Amazon basin, on August 27, 2019. - Brazil will accept foreign aid to help fight fires in the Amazon rainforest on the condition the Latin American country controls the money, the president's spokesman said Tuesday. (Photo by Joao Laet / AFP)

A woman holds a sign that reads "This system is unsustainable" during a protest along Paulista Avenue in Sao Paulo, Brazil, on September 20, 2019, in the framework of the "Friday for the planet" global demo against climate change. - A Youth Climate Summit will take place at the United Nations on Saturday. UN Secretary-General Antonio Guterres will then host an emergency summit on Monday in which he will urge world leaders to raise their commitments made in the 2015 Paris climate accord. (Photo by Miguel SCHINCARIOL / AFP)