Over the weekend, a man was arrested after allegedly placing explosives in a fuel truck near Brasilia’s airport, hoping to sow “chaos” ahead of the inauguration Sunday.The suspect was a supporter of Brazil’s outgoing far-right President Jair Bolsonaro, and told authorities he wanted to “prevent the establishment of communism in Brazil” under leftist Lula.On Sunday “there will be a mobilization of 100 percent of the police forces of the Federal District (of Brasilia) to ensure the safety not only of the president, but also of foreign delegations and the public,” Lula’s future security minister Flavio Dino told reporters.Lula backers have expressed fear on social media of riots or attacks on inauguration day, with hundreds of thousands of people expected to attend events in Brasilia.After Lula defeated Bolsonaro with 50.9 percent of the vote in a runoff election in October, supporters of the vanquished president blocked roads and demonstrated outside military barracks demanding the armed forces prevent Lula’s inauguration."