WASHINGTON, NOV. 20, 2021: When Bernie Sanders won the presidential election in a squeaker last year, progressive Jews enthused that a glorious new era in American Judaism had dawned. Synagogues in Park Slope and on the Upper West Side took turns hosting thought leaders such as Peter Beinart (author of “The Crisis of Zionism”) and Max Blumenthal (“Goliath: Life and Loathing in Greater Israel”) to explain how American Jews were heading into a “post-Israel” era — and why that was a good thing. Lefty rabbis published lengthy Facebook posts about how mainstream and center-right Jewish organizations are all actually racist...