Trump-endorsing billionaire Elon Musk, the richest man in the world and the owner of the social media company once known as Twitter, received criticism on his own platform on Saturday after sharing a video showing an animated Donald Trump killing Joe Biden. Musk over the weekend took to his own platform, now called X, to share what he deemed to be the “best AI video to date.” The video shows Trump, as “Neo” from The Matrix, stopping bullets in mid-air and then fighting an “agent” AI-generated to look like Joe Biden. Trump then kicks Biden to the ground before jumping inside the president’s bod…