In Tough Jews, Rich Cohen sets out to explode this particular stereotype, rehearsing the deeds of the legendary brawlers and assassins of Jewish organized crime in America. More ambitiously, he attacks the purportedly commonplace idea that “Jews are supposed to be weak.” As he sees it, the Jewish thugs of yester-year are more than mere curiosities, symbols of the less savory side of an immigrant success story. They are the success story--model Jews, every one of them. “The gangsters were a