[1] From 1925 to 1933, Robert Weltsch was active in the Zionist organization Brit Shalom which advocated a binational solution in Palestine, with Jews and Arabs living together.

Weltsch was editor of the Jüdische Rundschau (Jewish Review), a newspaper published twice a week in Berlin, Germany during the years the Nazis were gaining support.

His best-known contribution was a reaction to the April 1, 1933 Nazi-led boycott of Jewish shops when in his editorial Weltsch used the phrase, "Wear it with pride, the yellow badge.

It was not a reference to the forced-wearing of yellow armbands, which the Nazis didn't force on Jews until 1941, but rather a call for unity to a German-Jewish community that had until then thought of itself as comfortably assimilated into German life.

He was a major force in establishing the Leo Baeck Institute, named for a rabbi and leader of the German-Jewish community during the Nazi years.