LAS VEGAS, Nevada—The Republican Jewish Coalition begins its annual conference in Las Vegas Nov. 5—postponed a year due to COVID—under a dark cloud with a hint of light. The dark cloud—it should not surprise readers to know, but it will some anyway—is the ominous rise of antisemitism in our country. It’s not exactly Germany 1938, but, according to a 2021 survey by the American Jewish Committee: “Approximately one in four (24 percent) American Jews has been the target of antisemitism over the past 12 months: 17 percent said they had been the targets of antisemitic remarks in person, 12 percent said they had been the targets of antisemitism online or on social media, and 3 percent said they had been the victims of physical attacks. “Consequently, approximately four out of every ten American Jews (39 percent) have changed their behavior out of fear of antisemitism.” Despite what some nostalgic liberal groups would …