https://www.theguardian.com/us-news/2020/may/26/trump-twitter-fact-check-warning-label
Since ascending to the US presidency, Trump has used his Twitter account to threaten a world leader with war, amplify racist misinformation by British hate figures and, as recently as Tuesday morning, spread a lie about the 2001 death of a congressional aide in order to smear a cable news pundit. Throughout it all, Twitter has remained steadfast in its refusal to censor the head of state, even going so far as to write a new policy to allow itself to leave up tweets by “world leaders” that violate its rules.However, for the 1st time they have now tagged a recent bigtime LIE of his alleging mail-in vote fraud. The tag simply said "Get the facts" and when you click it, you get the truth.
T rump promptly threatened to shut down Twitter.
Facebook continues not to interfere with T rump’s LIES there.