How a secretly recorded phone call could bring down the Brazilian government - video explainer

On Wednesday night tens of thousands of Brazilians took part in mass protests in major cities across Brazil, demanding the president, Dilma Rousseff, resign. A secretly recorded phone call between former president Luiz Inácio 'Lula' da Silva and his successor, Dilma Rousseff, suggests his appointment to a ministerial position on Wednesday was motivated by a desire to avoid prosecution in Brazil's worst-ever corruption scandal