In response to the raging wildfires in the Amazon rainforest, protesters across South America and Europe took to the streets on Friday. Women hold placards, reading "The Amazon is on fire. Act now," during a protest outside the Brazilian Embassy in Buenos Aires, Argentina, August 23, 2019. /AP Photo

Hundreds gathered in London, Madrid, and Bogota, calling on the Brazilian government to act. Brazilian President Jair Bolsonaro responded to the growing international condemnation on Friday by announcing that the army may be sent in to tackle the fires. Climate activist groups attend a protest in Bogota, Colombia, August 23, 2019. /VCG Photo

Demonstrators hold canoe paddles during a protest in front of the Brazilian Embassy calling on Brazil's President Jair Bolsonaro to protect the Amazon rainforest, in Lima, Peru, August 23, 2019. /AP Photo

A boy wears a gas mask during a protest against Brazil's Bolsonaro government over the fires in the Amazon rainforest in front of the Brazilian Embassy in Santiago, Chile, August 23, 2019. /VCG Photo

A woman breaks down during a demonstration demanding more protection for the Amazon rainforest, in downtown Rio de Janeiro, Brazil, August 23, 2019. /VCG Photo