On the occasion of the 200th anniversary of the New Israelite Temple Society in Hamburg in 2017, the Institute for the History of German Jews (IGdJ) and the Abraham Geiger Kolleg (AGK) at the University of Potsdam shed light on the development of religious pluralization in Judaism up to the present day, with a focus on progressive facets of Judaism. A conference was held in December 2017 under the direction of Rabbi and Chairman of the Union of Progressive Jews, Prof. Dr. Dr. Walter Homolka, and the Deputy Director of the IGdJ, PD Dr. Andreas Brämer. A commemoration was also held in Poolstraße.