I was just reading about the 1932 movie Misjudged People and some of the context around it. A documentary about Deaf people in Germany intended to promote a positive attitude towards Deafness among the country's public, Misjudged People was apparently among the first films banned by the Nazis, being banned in 1934. The first half of the film concerned Deaf education in Germany, and was reportedly filmed at a Deaf Jewish school known as the Israelite Institution for the Deaf (Israelitische Taubstummenanstalt); this half of the film apparently even included an interview with the school's director Felix Reich, who was himself, naturally, Jewish. Mr. Reich would eventually be arrested by the Nazis, fleeing to England with some of his students; the Deaf Jewish students who stayed behind, as well as their teachers and other school staff, would all be murdered in the Holocaust, and the school building itself was soon torn down, with only a plaque left to commemorate the important chapter of German Deaf Jewish history at the address Berlin-Weißensee, Parkstraße 22 today.

...The thing is, though, Misjudged People was a movie produced by ReGeDe, the Reich Union of the Deaf of Germany, which was a Nazi organization. The film's screenplay was written by Wilhelm Ballier, a Deaf Nazi who was ReGeDe's administrative head at the time. So this man Wilhelm Ballier saw his movie banned by his own political party for being too positive about "his people", this man featured a Jewish school prominently and positively in his movie, and he saw the terrible things that happened to that school's staff and students after his political party came to power, and he only continued to support the Nazis. In fact, he doubled down and became a firm believer in the idea that Deaf Germans were "hereditarily diseased" people who should sterilize themselves as a "sacrifice for the greater good of the nation" — and he denounced any Deaf Germans who refused to submit to this program of mandatory sterilization.

I just don't get this mentality at all...