It goes beyond whether someone has a choice or not. Bhuddist, Hinduist, Shintos, Janist, zoararastrians all have the same choice yet society does not look upon them with the same derision as is offered to the Jews. Why is this?
As we approach the easter season pay special attention to the reactions of others at critical points in the passion play. The judgement in front of pilot. The Temple and the money changers. The crowd choosing barabas. These are all points that split apart judiasm and turn it into pariah.