Continuing large-scale deforestation in Brazil's Amazon region suggests a new government aim to become "carbon neutral" by 2060 lacks credibility, Brazilian scientists have said.
The protest is the latest challenge for a president caught between domestic demands for development and international pressure to protect the rainforest.
President elect Jair Bolsonaro signals his government will be strongly pro-business, likely bringing major setbacks for the environment, indigenous groups and social movements in Brazil.