The conflict centers on Meta, which must prove to Brazil's top electoral court that its algorithms treat candidates equally. Internal Meta messages showed employees admitting that Facebook and Instagram restricted Lula's reach while promoting Bolsonaro's accounts, though Meta denies political bias and attributes the issues to technical glitches. A Federal University of Rio de Janeiro study found 1,613 irregular, US-funded ads on Meta platforms that garnered 171 million views and earned $400,000, while whistleblower Nadia Beller alleged the Bolsonaro family met with Meta to coordinate US interference.
