https://en.wikipedia.org/wiki/Association_of_German_National_Jews
The Association of German National Jews (German: Verband nationaldeutscher Juden) was a German Jewish organization during the Weimar Republic and the early years of Nazi Germany that eventually came out in support of Adolf Hitler.
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In 1934 the Association made the following statement:[6]
The seemingly ironic fact that a Jewish association advocated loyalty to the Nazi programme gave rise to a contemporary joke about Naumann and his followers ending their meeting by giving the Nazi salute and shouting "Down With Us!".[7][8]