reporter: tonight facebook is responding publicly for the first time to complaints filed with regular rarities saying any sense it has any sponszable for january 6th is absurd but the tens of thousands of pages of documents are raising real questions about what facebook did and didn t do. facebook over and over again chose to optimize for its own interests like making more money. reporter: that belief prompted facebook whistleblower frances haugen to file at least eight separate complaints with the securities s and exchange commission obtained by cbs news from a congressional source. among allegations, the social network misled inverts and public about its role perpetuating misinformation and violent extremism relating to the 2020 election and january 6th insurrection including removing faift systems put in ahead of the election. haugen speaking to 60 minutes scott pelley. as soon as the misinformation was over they turn to it off.