I recently finished all three seasons of "The Crown". Mr. Wordsworth and I enjoyed it and he knows virtually nothing about the monarchy or English history. This episode is in his top ten and is probably my #1 favorite episode.
David and Wallis really were delightfully evil in the first two seasons. Mr. Wordsworth referred to them as the British Team Rocket (from Pokemon) with their snark and pretentiousness. When we saw the dog party at the beginning of the episode, we were so excited to have them featured again. Unfortunately, I knew what the Marburg files were and he did not so he had a surprise coming. It certainly skewed his opinion of the Windsors after that.
I agree wholeheartedly that the final panels of actual photos did a lot to drive home that this wasn't just drama created for the show.
However, it's important to note that, in the 1930's, German treatment of the Jews was, by and large, discriminatory, not homicidal. There were instances, such as Kristallnacht, that the German government portrayed as spontaneous mob violence, that were later determined to have been organized, but, for the most part, violence against Jews was largely blamed on fringe elements. The British (and, for that matter, the American) government didn't agree with it, but it was considered an internal German problem, not an international responsibility. Jews in both countries protested; the German ambassador to the US tried to pressure Roosevelt into silencing the protesters and FDR explained that we don't do that here in America. The German government retaliated by taking its anger out on the Jews still remaining in Germany.
Concentration camps in Germany in the 1930s were bad, but they were prison camps, not death camps. Political prisoners and actual criminals were the bulk of inmates in the 1930s. People could, and did, die in them, but not en masse and there was no policy of systematic extermination of the Jews at that time. The German government's policy during this period was to get the Jews to leave the country. Jews that were arrested and detained in a concentration camp were often released after several months and encouraged to emigrate...after the German government fleeced them of everything of value. During a global depression, few countries were willing to accept large numbers of people who didn't speak the language, didn't have a job lined up, didn't know anyone and didn't have any money.
The "Final Solution" didn't start happening until after the war began. So, if David visited a concentration camp in 1937, he would have probably seen political prisoners and criminals exercising, working, getting mail, etc. He would not have seen starving women and children and absolutely would not have seen gas chambers or crematoria. There's no doubt in my mind that he certainly was shown a sanitized version of a standard camp.
David was probably bigoted against the Jews - a lot of people were in those days - but there's a huge difference between believing in the bigoted generalization that Jews hold a disproportionate position in the business world and wanting them all from cradle to grave to be murdered. By the time it was known in the international community that the Jews were being murdered, the war was on and it was felt that the best way to help the Jews was to win the war.
Prior to the war, those who felt that Hitler could be negotiated with were numerous in the government and in the public at large. No one wanted another devastating war...except Hitler. That was the problem. They thought Hitler didn't want war. They thought by negotiating with him they could avoid it. David wasn't alone in this belief nor was he alone in thinking that the Nazis, with all their faults, would be a bulwark in central Europe against the violent athetistic revolutionaries in the Soviet Union. Appeasement is a legitimate negotiating tool - it just didn't work with Hitler.
As for the portrayal of Billy Graham, I thought his character was spot on and loved the conversations between him and the Queen. His simple Christianity appealed to her over the ritualistic Church of England with its learned, yet rigid, heirarchy. The Queen Mother's comments about him having been a brush salesman reflected the attitude that such a man could have had no meaningful theological education and, thus, didn't have any real spiritual authority.
The final scene of David stuck in this pedantic life of parties and playing cards with Wallis' friends, looking at himself in the mirror certainly reflected a far different person than we have seen depicted thus far. I agree with JJJ's earlier comment that a prequel series with Jared Harris and Alex Jennings would be great. I'd love to see "The Crown" reinvented several times going back through the monarchy and setting the stage for this series as the decades go by.
Wishful thinking, I'm sure.