(JTA) — Days after stoking controversy by delivering what some believed to be a Nazi salute and making Holocaust jokes, Elon Musk appeared at a campaign rally for a far-right German political party to tell supporters to be proud of their heritage. Musk’s appearance Saturday at the rally for Alternative for Germany, known as AfD, was unadvertised and came by video. It was the second time in as many weeks that the world’s richest man and close ally of new U.S. President Donald Trump has appeared alongside Alice Weidel, the party’s candidate for chancellor in Germany’s Feb. 23 election. During...