“It pains me to say this,” tweeted Team Biden staffer Aaron Keyak recently, “but if you fear for your life or physical safety, take off your kippah and hide your” Star of David. Keyak’s official White House title is “Jewish engagement director,” and his tweet revealed much about Team Biden’s views on anti-Semitism and cultural politics in 2021 — none of it good. Keyak, an Orthodox Jew, is a longtime Beltway swamp creature and Democratic Party hack. During the 2020 campaign, it was his job to tell Jewish voters that then-President Donald Trump was their No. 1 enemy, that his...