In last fall's Massachusetts gubernatorial campaign, the Republican candidate and eventual victor, Mitt Romney, endured all sorts of attacks for his wealth and upper-class status. Coming from a state Democratic party whose power is concentrated in the Kerry-Heinz fortune and the royal family of Kennedy, these assaults seemed a trifle disingenuous. (Some years ago, the Boston Globe actually ran an op-ed piece in which John Silber argued that Ted Kennedy had earned the right not to debate political rivals.) I've never gone in for the class-warfare style of political argument, but in this, the winter of our discontent — where,...