The natives were certainly fighting each other before whites arrived, too - the warrior role is an important part of many tribes' culture.
Should the Comanche give reparations and land back to the Apache because they drove them out and slaughtered them almost to complete genocide?
Should the Ojibwe (who I share blood with) apologize for teaching white settlers the name "Sioux", meaning "little snakes", for the Lakota (their enemy)?
The USA should honor its treaties and acknowledge any wrongdoings, but these land acknowledgements that state the land is "occupied" by a foreign power are absurd and I'll continue to strongly object to them.