The world is staggering under the weight of billions of bad decisions — bad decisions by regular citizens and by the world’s leaders. Of those choices, one stands out as particularly dangerous — the decision to blame Jews for humanity’s problems. We have seen where this decision leads. The Nazis took it to a place they called Endlösung. In English, that means, “The Final Solution.” Adolf Hitler built his whole sorry career on extreme hatred of Jews. In his book, Mein Kempf, he blamed Jews for mankind’s worst evils. He spoke of “the Jewish question” as a primary problem for...