"Capitalist" is a description of those wielding economic power-- it is a functional description of hierarchy. "Jew" is not a functional category, but a scapegoated group which is imagined to be a functional group by those needing that scapegoat -- even if historically Jews had been forced into certain functional roles that created the stereotype.
But to speak of capitalists as a group is no different from speaking of politicians as a group in the political realm. To say that politicians run the Congress s not pejorative, it is definitional (if possibly simplistic in a capitalist system where politics is not autonomous from the capitalist hierarchy).
-- Nathan Newman