Brazil’s former president Luiz Inácio Lula da Silva has excoriated Jair Bolsonaro’s “moronic” and bungling response to the coronavirus pandemic, in a stirring and potentially historic address widely seen as the start of a bid to wrestle the presidency back from his far-right nemesis. The veteran leftist, who led Latin America’s top economy through some of the brightest years in its modern history, was catapulted back onto the frontline of...