This is impossible.
The residents of the Western Hemisphere were gentle and peaceful and never harmed anyone.
It was only when Evil White People arrived that things turned bad.
You hit the nail on the head (regarding the ridiculous politically correct fantasy being propagated by the leftist academia).
With the exception of the mass epidemics that the European arrival incidentally caused, the European conquest of The Americas brought a higher civilization and culture to the American Indians.
And introduced the concept of mercy - and a merciful God.