Facebook took down a video President Trump posted to his account Wednesday, citing its rules against false claims about the coronavirus. The decision to remove the video signals a new direction for Facebook, which has been taking incremental steps recently to distance itself from the perception that the company deliberately turns a blind eye to the president’s potentially harmful behavior. The video in question was a clip from a Fox News segment from Wednesday morning in which the president makes the unsubstantiated claim that children are “almost immune” to COVID-19.