What is in doubt? The movie had facts about the whole organization straight from the sources, ones that are confirmed in war crimes testimony and nazi documents. The arrivals of the holland jews happened as described.

It started with ghettos, not camps. A place where they could go to be safe from random attacks. The ghettos became prisons over time, not right away. Jews went willingly and happily to escape persecution.

The thing is, no one talked about it, and those that did were alex jonesed.

As for those who were killed like the holland jews, it is hard to believe until you see it in action. You are going on holiday, to a nice place with spas and pools, which everyone did back then. Health spas were the thing to do for the rich elite. They expected the royal treatment even though they were jewish. There is no war anymore, the country is occupied, yet again, the fighting is over. No one rounded up jews for mass extermination except spain in those awful stories from centuries ago, and did it really happen like that, or at all?