Tens of thousands of people in Brazil have held pro-democracy rallies, in an angry response to the storming of Congress by ex-President Jair Bolsonaro's supporters.
In the country's largest city of São Paulo, crowds chanted that Mr Bolsonaro must go to prison.
About 1,500 people have been held over Sunday's riots in the capital Brasília.
They came a week after President Luiz Inácio Lula da Silva was sworn in after October's election that divided Brazil.
On Monday evening, the 77-year-old new leader - widely known as Lula - visited the damaged buildings of Congress, the presidential palace and Supreme Court together with the country's governors, condemning the "terrorist acts" and vowing to punish the perpetrators.
Mr Bolsonaro, 67, has not admitted defeat in the tightly-fought election, and flew to the US before the handover on 1 January. On Monday, he was admitted to hospital in Florida with abdominal pain.
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