Some US lawmakers condemned the rioting by far-right supporters of the Washington-backed former President of Brazil, Jair Bolsonaro, after they stormed and vandalized government buildings Sunday.

Brazilian police arrest hundreds of protesters and wrest back control of key governmental buildings after they were overrun by unruly supporters of the ultra-right-wing former president Jair Bolsonaro.

The head of Brazil's electoral court Alexandre de Moraes on Wednesday rejected a complaint from President Jair Bolsonaro's allies to challenge the presidential election, which the incumbent lost by a small margin, according to a court document.

The outgoing Brazilian President Jair Bolsonaro met with advisors to his incoming successor Luiz Inacio Lula da Silva on Thursday, who described the visit as "positive" amid fears that the far-right incumbent would try to contest his election defeat.

Brazilian President Jair Bolsonaro on Tuesday did not concede defeat in his first public remarks since losing Sunday's election.

An American journalist and political commentator says the Brazilian election is difficult to understand from a US perspective.

Human rights groups and researchers have raised the alarm about the failure of social media platforms in Brazil.