This article examines the relationships between a number of minority Protestantisms (French, Italian, Hungarian, Czech) and the Jewish minorities in these same countries, the way in which these two groups in their respective countries contributed to the construction of a religious pluralism, the fruits they derived from this pluralism, the hatred their efforts drew, and finally the Protestant response to the introduction of antisemitism during the 1930s and 1940s, both in the public sphere and especially in states and legislation. Its purpose is not so much to draw firm conclusions, as it is to open up a new avenue of research beyond the “pluralization” of those societies to which Protestant and Jewish minorities are already known to have made a significant contribution.