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. Photos showed him on the grounds of the Auschwitz-Birkenau camp in then-occupied Poland. The notorious concentration camp is where the Nazis exterminated about 1.1 million people of whom 1 million were Jews, according to the Auschwitz-Birkenau state museum. Musk wanted to discuss online anti-Semitism in Kraków as part of a conference organized by the European Jewish …