Elon Musk scornfully compared George Soros to the X-Men supervillain Magneto after the billionaire Democratic donor disclosed he had dumped a massive trove of Tesla stock. Musk went on to claim that Soros “hates humanity.” The 92-year-old, Hungarian-born billionaire heads the Open Society Foundations and has frequently drawn the ire of conservatives for his support of progressive causes. “Soros reminds me of Magneto,” Musk tweeted. The post had generated nearly 165,000 likes and nearly 25 million views as of the time of this article’s publication. Musk did not initially explain what prompted him to lash out at Soros. But the...