KRAKOW, Poland (Reuters) – Elon Musk privately visited the Auschwitz-Birkenau site of a former Nazi German concentration camp on Monday before speaking later at a conference on rising antisemitism, after his social media platform X came under fire for some content. The European Jewish Association (EJA) said Musk made the visit with EJA Chairman Rabbi Menachem Margolin, conservative U.S. journalist Ben Shapiro and Holocaust survivor Gidon Lev. “Musk laid a wreath at the wall of death and took part in a short memorial ceremony and service by the Birkenau memorial,” an EJA spokesman said. Musk wa…