Facebook fact checks user's 9/11 post: Facebook applied a missing context label to a user's 9/11 post, according to a purported screenshot. The post depicted an image of former President Donald Trump taken outside the NY Stock Exchange on September 18, 2001. Instagram claimed the post was "missing context." "The same information was checked in another post by independent fact-checkers." The platform linked to a fact-check article. Fact-checked posts lose exposure and are negatively affected by the platform's algorithm.