LGBT people are the most suppressed in history.
For example, in WW2, many LGBT people were imprisoned and killed by the Nazis, in the same concentration camps that killed millions of Jewish people.
History rightly teaches the latter, documenting all the atrocities, but I bet you didn't know this:
Many LGBT people remained in prison. Being gay was illegal in Germany, and remained so.
The world's first transgender clinic was in the Wiemar Republic:
https://en.wikipedia.org/wiki/Institut_f%C3%BCr_Sexualwissenschaft
Nazis destroyed it.