IN 1919, Magnus Hirschfeld and Arthur Kronfeld, founded the “Institut für Sexualwissenschaft” (Institute for ‘Sexual Research’) in Berlin. Both were active in the German Communist Party and were prominent members of Berlin’s Jewish community.
A multitude of degenerate services were offered at the institute, including the first surgical sex changes in modern history, abortions, lectures and ‘sex counseling’, room rentals, a large library of pornography and erotic literature on every possible perversion (including bestiality and pedophilia), and a Museum of Sex featuring a wide array of homosexual fetish items, dildos, “masturbation machines”, etc.
https://nationalvanguard.org/2019/06/the-jewish-pioneers-of-sexual-degeneracy-in-1920s-berlin/