Elon Musk lashed out at the U.S. media over the weekend, accusing the industry of being “racist against whites and Asians” after a slew of newspapers canceled long-running cartoon “Dilbert.” The comic strip, which launched in 1989 and pokes fun at the corporate world, was dropped by various newspapers—including The Washington Post, Cleveland’s Plain Dealer and The Los Angeles Times—over the past few days after its creator, Scott Adams, posted a video to YouTube on Wednesday in which he made racist comments. In the clip, Adams, who is white, labeled black Americans as a “hate group” and said white people...