CHICAGO (Reuters) – Four hundred rabbis will publish a letter on Thursday calling on Fox News to sanction host Glenn Beck for repeated use of Nazi and Holocaust imagery and for airing attacks on World War Two survivor George Soros. In an open letter to Rupert Murdoch, the chairman of News Corp, which owns Fox, the rabbis also demand an apology from Fox News chief Roger Ailes for characterizing Beck's Jewish critics as nothing more than "left-wing rabbis." The letter will appear as an advertisement in the News Corp-owned Wall Street Journal on Thursday for which the rabbis spent more...