This is from Wikipedia:
Burroughs strongly supported
eugenics and
scientific racism. His views held that English nobles made up a particular heritable elite among
Anglo-Saxons.
Tarzan was meant to reflect this, with him being born to English nobles and then adopted by talking apes (the
Mangani). They express eugenicist views themselves, but Tarzan is permitted to live despite being deemed "unfit" in comparison, and grows up to surpass not only them but
black Africans, whom Burroughs clearly presents as inherently inferior, even not wholly human. In one Tarzan story, he finds an ancient civilization where eugenics has been practiced for over 2,000 years, with the result that it is free of all crime. Criminal behavior is held to be entirely hereditary, with the solution having been to kill not only criminals but also their families.
Lost on Venus, a later novel, presents a similar
utopia where forced sterilization is practiced and the "unfit" are killed. Burroughs explicitly supported such ideas in his unpublished nonfiction essay
I See A New Race. Additionally, his
Pirate Blood, which is not
speculative fiction and remained unpublished after his death, portrayed the characters as victims of their hereditary criminal traits (one a descendant of the corsair
Jean Lafitte, another from the
Jukes family).
[40] These views have been compared with
Nazi eugenics (though noting that they were popular and common at the time), with his
Lost on Venus being released the same year the Nazis took power (in 1933).
....I bought all the Venus books back in my ERB days, but never read any of them, and, as mentioned yesterday, didn't read very many of the Tarzan books. (The only ones I'm pretty sure of are the first one or two and the one in which Tarzan goes to Pellucidar -- I did read all of the Pellucidar books when I was a kid.) I seem to have missed the worst of ERB's evocations of eugenics, etc. It would be interesting to see an accurate list of prominent Americans and British people who publicly approved of the sterilization of "unfit" demographics, etc. What a century that was for really horrible promotion of schemes for utopian futures. I wonder who the anti-utopians were, especially in science fiction; there must have been some other than C. S. Lewis.