I'm not sure how to explain the context of this question. Homosexuality was considered a mental illness in the first half of the 20th century. I often get told homosexuals were put in concentration camps. But was there a specific reason? Or were they just put in among other people considered insane?
Hi, here are a couple of posts that touch on this (TL;DR: degenerate, not mentally ill)
Were Homosexuals targeted in the holocaust, outside of the 'reich'? - featuring /u/estherke
[Minorities] What was the experience of homosexuals under the Nazi regime (and the 20s-40s in general, for context)? - featuring /u/commiespaceinvader