What do Karl Marx, Leon Trotsky, Noam Chomsky and George Soros have in common? They were/are all radicals, born to Jewish parents, had no Jewish identity and hurt Jews (not to mention non-Jews). The term "non-Jewish Jew" is generally attributed to the Jewish historian Isaac Deutscher, who wrote an essay by that name in 1954. The term describes the individual who, though born a Jew (Judaism consists of a national/peoplehood identity, not only a religious one), identifies solely as a citizen of the world and not as a Jew, either nationally or religiously. Once the walls of Jewish ghettos broke...