New Delhi, Oct. 8 -- A sea of red-clad demonstrators made their way between two historical squares in Rio's center, chanting and holding signs referencing Brazil's sovereignty and democracy in the South American country, which they said were under threat.

"We're fighting for Brazil, not for Lula," said Talita Amaral, a 19-year-old environmental science student at a nearby university. She was wearing Brazil's yellow and green soccer jersey, often worn by supporters of Bolsonaro, which she said was a gesture aimed at reclaiming the national colors.

"We don't have time to be sad, we need to be doing this, occupying the streets, sending messages in WhatsApp groups, trying to convince people," Amaral said, as the chant "Ole ole ole ola, Lula...