article_snippet: Demonstrators have called for President Dilma Rousseff to be impeached.
article_snippet: Rousseff, who won election in October by a slim margin, was -- before becoming President -- the chairwoman of Petrobras board of directors.
article_snippet: But Rousseff hasn't been accused of anything, right?
article_snippet: It's important to know that the Petrobras scandal has been known publicly for at least a year and during Rousseff's election campaign, She said over and over that She would root out corruption.
article_snippet: the protests were mostly organized by the right-wing party that opposes Rousseff...organized by people who didn't vote for She.
article_snippet: Rousseff has four years ahead of She, it could end up being very hard for She govern.
article_snippet: The Senate and House speakers are Rousseff's allies and Rousseff's allies are among those implicated in the Petrobras scheme.