President Trump on Sunday posted an image of former President Obama and his wife, Michelle Obama, waving before boarding an Air Force One that had been spray-painted with graffiti. It came months after another post by the president that showed the couple as primates in a jungle. That one was deleted after stiff, bipartisan backlash. The latest image shows the Obamas smiling and waving at the top of stairs alongside a baby blue and white presidential plane with graffiti painted on it that included the Democrat’s campaign slogan “Yes We Can,” “Obama” and “BLM,” short for Black Lives Matter. The...