If congresses argument is that Propaganda from fake Russian accounts was able to sway the Voters decision in the 2016, I am embarrassed as an American.
Although I think Zuckerberg was in fact negligent in his handling of misinformation, or "3rd Parties" handling of his Companies information users have to understand that nothing in this life in free; Not even the ability to post, like, and share. That has been made clear...