> In any case in the context of US civil rights, the Indians (native) are a far more reasonable conclusion than Indian (Asian)

Why? There's a very direct link between India and the US civil rights movement led by Martin Luther King Jr.

https://en.wikipedia.org/wiki/1959_visit_by_Martin_Luther_Ki...

I understand your confusion and I didn't downvote you. But the answer to "Which Indian?" is at the very least a coin flip in this context.