Can you elaborate? I am unaware of the British Empire dehumanizing British settlers in Rhodesia. You don't have in mind the Boer wars, by any chance? That's a different country (and the Boers were not descendants of Brits, too, speaking a different language, for example).
Dehumanize is too strong a word I admit.
"Sold out" would be a better one.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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