1. they made it basically illegal for Jewish people to have nationality
and
2. they were all about "living room" for Germans and used that to justify invasion.
On the other hand I do totally get annoyance with erasure particularly given the brutality of the third Reich towards Poland.
So this is sort of a "First they came for," issue here. You may not yourself be Jewish or Black or whoever the scapegoat du jour is. (Although, those two groups are basically always "it.") But the canary in the coal mine is dead.
1. in politics you can multitask
and
2. it NEVER helps you to throw a group of people under the bus.