The "pool" narrative of Auschwitz got debunked, iirc it was actually like a retention pond and the guards put a diving board on it for themselves.

Nazis did actually make propaganda films of ghettos showing people were being "...treated humanely. They're just sectioned off from the rest of us." They'd unload people freshly deported to ghettos and film them with all their clothes. Then have them sit in "restaurants."

Once they collected footage of prisoners, they'd steal their stuff and throw them in run-down buildings. Footage was then edited and broadcasted to the rest of Germany with rhetoric like "These jews are living more luxurious lives than you, which is why the Führer made them downsize a little bit by moving them into less luxurious (but still luxurious) homes."

This was before they started sending people to death camps.