What I meant about the Jews is that contrarily to America there are very few ethnically Jewish people in most European countries, and except maybe in France and the Netherlands, which have sizeable Sephardic communities, the image that Europeans have of Jewish people is either the stereotyped Orthodox chap dressed in black with a hat, a beard and a long hair, or the completely different-looking Jewish actors and scientists that they have never met.
Most French people don't even know that many of their politicians (Pierre Bérégovoy, Jacques Attali, Bernard Kouchner, Jack Lang, Laurent Fabius, Dominique Strauss-Kahn, Nicolas Sarkozy, Pierre Moscovici), business people (André Citroën, Serge Dassault, Alain Afflelou) and celebrities (François Truffaut, René Goscinny, Serge Gainsbourg, Josiane Balasko, Joe Dassin, Michel Berger, Isabelle Adjani, Jean Reno, Michel Drucker, Richard Berry, Philippe Bouvard, Jean-Jacques Goldman, Patrick Bruel, Roman Polanski, Sonia Rykiel) are Jewish because they don't advertise it as freely as in the States. There is almost the same stigma as being gay. Some people (like Philippe Bouvard) only publicly announced that they were of (partial) Jewish descent late in their career.