a whistle-blower told facebook's algorithm sowed division and hate and has led to violence. with us now, the ceo for countering digital hate which has done its own research into the dangers of facebook and its algorithms. let me start with this basic question. you heard and read mark zuckerberg's statement there. and you heard what ms. haugen said. based on your research, who is right? >> clearly what ms. haugen has said is not just her own testimony and analysis of the situation, but it's based on primary data that is taken directly from facebook. this is data that corroborates, it confirms what we've been finding independently in civil society, researchers, academics, organizations which looks at extremism and harms created in society on what we've been finding is that not only is there hate, misinformation