testify. they are accusing facebook officials of misleading congress by providing, quote, false and inaccurate testimony. this all stems from the recent testimony of a facebook whistleblower who outed the social media giant's efforts to misrepresent the amount of hate speech on the platform. cnn's donie o'sullivan who has been covering all the facebook drama. what is facebook being accused specifically of lying about? >> i think really what we see in this later from senator blumenthal is a lot of frustration. he's been asking facebook for questions about internal research the company has been doing, particularly on its harm to teenagers. and he wasn't getting a lot of answers. then comes along this whistleblower. shows that there is all this internal research and i think blumenthal is saying, why weren't you telling us about this all along, specifically on what he says he believes that facebook lied to him about is how facebook is controlling information being shared within the company. facebook moving in the past few weeks to lock down some pieces