I'm saying that a visit to Auschwitz can't prove it didn't happen.

Funny how before the Jews were rounded up and taken to the camps they weren't starving to death... Also the idea that work camps were there for the Jews to earn a living is ludicrous. They were prisoners and forced to work til they died.
'Judaism' is not a nationality, it is a racial background or ethnicity. Those people were Germans, Poles, Austrians etc. They were hardly prisoners of war.
It makes no sense for people to declare war upon a country within which they were citizens and residents.