This is a huge moment for Brazil.
Ex-President Jair Bolsonaro has been convicted of attempting a coup and leading an armed criminal group after losing the last election, which culminated in his supporters attacking government buildings.
He now faces a lengthy prison sentence, after Brazil's Supreme Court reached the majority of three votes needed to find him guilty.
For years, Bolsonaro has fiercely divided the country into those who love him and those who hate him.
His supporters, who include President Donald Trump, have described the trial as political persecution. Trump used it as an excuse to impose 50% tariffs on Brazil.
