My father, Guido Felix Brinkmann, was a German from Latvia who ended up in Poland on a program that moved German people into occupied territories. When it was time to join the military he innocently and honestly wrote on his application that his mother was Jewish but converted to Lutheran before he was born. That brought the proverbial "knock on the door" by the Gestapo and he was thrown into the Lodz Ghetto.
Once there he sat on a bench all day waiting to be processed. No one knew what to do with him because to the Jews he was obviously a German (and probably a spy) and to the Germans he was obviously Jewish. Finally at nightfall he was sent to an insane asylum because those people were too crazy to care whether someone was Jewish or German.
Can you imagine that? Too crazy to be bigoted.
What crazy people.
PS: "In an insane world, the sane would naturally appear insane." Mr. Spock to Captain Kirk