I'm searching for the word for someone who believes in the preservation of other people's cultures. Does anyone know of a good word for this? I don't think "anthropologist" is a good word, as that indicates the study of the cultures, but people can have this belief without studying them.
Well, you might want to try this simple word,
culturalist , which has similar meaning to what you try to express here.
The term I would use is cultural preservationist.