Thousands of protesters joined anti-corruption demonstrations across Brazil Sunday for the second time in a month, calling for President Dilma Rousseff's impeachment over an alleged bribery scandal at the state oil firm Petrobas. Rousseff has denied any involvement and was exonerated by the attorney general in a probe, but critics argue the scandal took place while she was the head of the firm. Though crowds were smaller than the more than 1.5 million people present at protests in March, organizers have estimated nearly 1 million showed up.
