I remember we have one in German, but it’s more about language…
you ask a bunch of questions ghat the answer are different colors, and when they are all used to saying colour’s, if you ask them what a cow gives, they’ll probably say white. Of course, this was in 2nd grade.
What aspect of indigenous peoples would you want to represent? Think about that in detail, and think about whether what you want to represent might just be a stereotype.
I can imagine that this can be done tastefully. But it could also turn out really horrible. What specifically do you mean by a sort of metaphor? Do you want to go into some indigenous social constructs and living conditions? If so, WHAT groups specifically?
Do you only want to talk about stolen land and shamans? I would advise against that. The question is more nuanced and you have to be more detailed to get usable answers