[2] Datafolha was created by Luiz Frias (born in 1964), the president of the board of directors of Grupo Folha and Universo Online (UOL) headquartered in São Paulo, Brazil.
March 13, 2016, during the anti-government protests of 2016, Datafolha counted 500 thousand people demonstrating on Paulista Avenue, in São Paulo,[3] using an on-the-ground sampling methodology adopted since 2011 to estimate the size of mobile crowds in events such as the gay pride parade and the protests that occurred starting in 2013.
Writing for the online newspaper The Intercept, he suggested that it is "simply inconceivable" that in just three months the portion of Brazilians in favor of calling new elections had fallen from 60% to 3%, and that those that wanted the continuation of Michel Temer's government "skyrocketed" from only 8% to 50%.
He argued that in the context of a question in the same poll showing only 14% approval of Temer's government, it's "extremely difficult to understand how [the claim] could possibly be true.
"[7] Greenwald went on to say that based on the full data and underlying questions that Datafolha released after the headlines were published, he and others such as the journalist Alex Cuadros believed that the questions posed to those interviewed had been manipulated to prejudice voters against Rousseff in the impeachment suit brought against her.