[1/5] Supporters of Brazil's former President Jair Bolsonaro demonstrate against President Luiz Inacio Lula da Silva as security forces operate, outside Brazil?s National Congress in Brasilia, Brazil, January 8, 2023. Launched in November 2020 and run by Brazil's central bank, Pix is free of charge for individuals, allowing them to instantly transfer money to others via online banking apps. Since its launch, over 133 million Brazilians and almost 12 million companies have made or received Pix transfers, according to the central bank. INVESTIGATIVE TRAILPolice, money-laundering experts and central bank officials said Pix donations will be central to investigators' efforts to uncover who orchestrated the insurrection. Pix transfers are covered by bank secrecy laws, and police can only access a suspect's transaction history with judicial authorization.

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