Really good article, thank you. I had not realized that in the early years after the war not the targeting of the Jews was swallowed up in the public consciousness by the overall carnage. I was born in 1962, and like most of my age peers read Anne's Frank's diary in school, so I have always taken the Jewish targeting for granted. It blows my mind that so many publishers turned her father down.
Worth mentioning is another element of the Holocaust that was overlooked until almost 50 years after the war. Gay and transgender people were targeted by the Nazis and sent to the death camps, where they wore pink triangles to designate why they were there.
Unlike Jews, Roma people, and others, people wearing pink triangles were not liberated from the camps. The American army detained them and eventually sent them to German prisons to serve out sentences for violating German laws against homosexuality.
The history of the queer Holocaust was largely buried in public consciousness until Richard Plant's Pink Triangle was published around 1990. About the same time, Act Up and Queer Nation adopted the triangles, which they inverted as a statement of protest, as symbols for their movements.
The German government eventually apologized for imprisoning transgender and gay people who had been in the death camps, but not until decades after the fact, after most of them had died.