Elon Musk, the owner of social media platform X and luxury electric carmaker Tesla who at times has been accused of backing anti-Semitic posts, visited the memorial site of the former German concentration camp Auschwitz on Monday. “It was incredlbly moving and deeply sad and tragic that humans can do this to other humans,” Musk said in the Polish city of Kraków after the visit at a conference on online anti-Semitism organized by the European Jewish Association (EJA). “It’s good to have these memorials so this can never happen again. It hits you much more in the heart when you see it in person,…