If you've got any information showing the trans craze in 1930's Germany I'd love to see it. Most of my research shows this sort of thing beginning to appear on the fringes as a "legitimate medical procedure" in Europe around the 1950's.

We can see an example from America here in the 1953 Ed Wood movie. Before he went on to (in)famy for his string of entertainingly bad B-movies.

https://en.wikipedia.org/wiki/Glen_or_Glenda

It's a fairly interesting look into the psyche of these sorts of people. Well removed from the current politically charged atmosphere. What I find particularly interesting is that while the director means this as a call for tolerance, I see it more as a call for help. As the case of both people canvassed leads you to see they aren't exactly of sound mind. And the interviews with the average Joe about it show they don't really understand this as a mental illness that progresses beyond the simple act of wearing women's clothing which as always been irrelevant.