The knowledge now widely accepted regarding the persecution of gay men under National Socialism was first addressed in the mid-1970s, initially within the gay rights movement and later among the general public.
The first program of the theater group “Brühwarm” from 1976 included a scene that addressed this persecution. The authors Hans-Georg Stümke and Rudi Finkler, who were also active in the Hamburg gay rights movement, published the monograph Rosa Winkel, Rosa Listen. Homosexuals and “Healthy Public Sentiment” from Auschwitz to the Present.
On the occasion of the performance of the play “Rosa Winkel” by American author Martin Sherman at the Theater der Stadt Essen, ARD Panorama reported in December 1980, featuring eyewitness accounts, on the situation of those who wore the pink triangle in the Nazi concentration camps.

