Far-right activists loyal to ex-president have launched what the government called a botched coup attempt

Security has been stepped up in Brazil’s capital amid concerns that hardcore supporters of the former president Jair Bolsonaro were planning to mobilise again, three days after thousands of extremists launched what the government has called a botched coup attempt.

Reports in the Brazilian media said far-right activists had summoned “a mega nationwide protest to retake power” on Wednesday afternoon. On Tuesday night, members of the national public security force in black SUVs could be seen taking up position along the esplanade leading to Brazil’s congress, supreme court and presidential palace – the three buildings stormed and ransacked during Sunday’s turmoil in Brasília.

Sunday’s insurrection by supporters of far-right ex-president was organised first on private messaging networks, experts say

The role of social media platforms and messaging apps in Sunday’s political violence in Brasília is under the spotlight after experts highlighted their use by Jair Bolsonaro supporters to question the presidential election result and organise the protests.

Facebook and Instagram’s owner, Meta, has said it will take down content that praises the storming of government buildings in Brazil’s capital, amid claims that tech firms had not done enough to head off the attacks or quell disinformation.