And many "indigenous peoples" took SLAVES.
A few tribes in North America were peaceable. Iirc from my grade-school history, the Mandans of the Dakota region were one of the less war-like groups.
But for the most part, yes, the "indigenous peoples" of North America committed terrible atrocities against each other. And they did so long before Columbus set foot in the Western Hemisphere.
After Europeans began to settle here as farmers, many "indigenous peoples" also committed horrible atrocities against them. Eventually this became a two-way street.