I think that the Holocaust resonates more for people who are older and particularly for those who were raised in the U.K. or Europe. Jane Fonda was more recent and probably of more interest to those in the U. S.
On a slight tangent, if you want to see a story of real self-absorption, check out Wikipedia for Leni Riefenstahl. Years ago, I saw a documentary on her (a film maker who did Triumph of the Will, a Nazi propaganda film for Hitler). This woman lived to 101, was the most self-absorbed human I have ever seen. She'd make Sonia Henie look like Mother Teresa.
It's funny, Scruff; Riefenstahl is the one who crossed my mind when we started talking about Henie's Nazi sympathies. Riefenstahl was really in the thick of it, right there in prewar and wartime Germany. She was attracted to Hitler and his ideas right at the beginning, in the early 1930s. I forgot she lived that long. Interestingly, long after the War, she worked with the Nuba people of Sudan, doing still photographs of them. So maybe the idea of Aryan superiority wasn't a complete obsession with her.
Amazing fact: I just looked her up in Wiki, and she worked for Greenpeace for a few years.