Supporters of Brazil’s outgoing President Jair Bolsonaro have attempted to invade federal police headquarters in the capital, in a burst of post-election violence on the day Luiz Inacio Lula da Silva was certified as the country’s next president.Witnesses saw Bolsonaro supporters, many in their trademark yellow national football jerseys or draped in Brazilian flags, confronting security forces on Monday night at police headquarters in Brasilia.Brasilia’s public security secretariat said that the unrest began after police carried out a temporary arrest warrant for Indigenous leader and Bolsonaro supporter José Acácio Serere Xavante, on suspicion of participating in anti-democratic protests.Since Lula won the election run-off on October 30, Bolsonaro has failed to concede, and some of his supporters have gathered outside military barracks across the country, demanding the armed forces intervene.Speaking after receiving the official “diploma” declaring him the winner, the 77-year-old ex-metalworker was overcome with emotion as he praised “the boldness of the Brazilian people in handing this document to someone who’s been attacked so many times for not having a university diploma”."