Huge crowds at Brazil protests against president

More than a million Brazilians have joined demonstrations around the country demanding President Dilma Rousseff's impeachment.

The protesters say the president must have known about a corruption scandal which has engulfed Brazil's state-owned oil company, Petrobras.

But Ms Rousseff has been exonerated in an investigation by the attorney general and denies involvement.

Julia Carneiro reports from Rio de Janeiro.