For nearly four years now, social media companies have been promising that they would avoid repeating the mistakes they made in the last presidential election, when users both foreign and domestic exploited their platforms to spread disinformation and sow discord among the American electorate.

So when The New York Post published a questionably sourced article that made incriminating claims about Joe Biden and his son Hunter last week, Facebook and Twitter acted swiftly to prevent its spread. But just as swift was the backlash from the president, members of Congress and journalists: Within 36 hours, Republican senators were threatening subpoenas, Twitter was backtracking and its chief executive was apologizing for the company’s “not great” response. Read More..