Could any 20th-century American Jew, no matter how famous, compare to Moses?
For Philip Roth, the answer was yes, and that Jew was composer Irving Berlin. In his novel, “Operation Shylock: A Confession,” Roth writes that Berlin, in his megahit “White Christmas,” secularizes the birth of Jesus; the song “turns Christmas into a holiday about snow.” While that quote does not appear in Larry Weinstein’s new documentary, “Dreaming of a Jewish Christmas,” the sentiment underlies every frame of the film.