Since you want to dip into history and name names. Aztec, Maya, Inca, the California Mission Tribes the list is very extensive. The form of Goverment whether Monarchy or Democracy matters little. The deeds were committed under a flag and in the name of a Country to advance that Countries interests. Right or Wrong it happened. It wasn't only South American Natives it was Central and North American natives as well.
And since you wish to claim 400 year amnesty and clean Espanas reputation by time and goverment changes. I suggest you vist La Tierra mis Padres. The hiearchy estbalished by Los Conquistadores is still quite evident in the Pueblos and Campos the Guerros, still hold the land and the mestizos still work the land. The Culture is a mix of Catholic (to hide) and native. All this done and supported by the Spanish Goverment via Land Grants and deeds. Do you think that the Pobres in Latin America are any happier than the Natives of North America?
And while we're at it how about the forced labor on Cubas Cane Plantations well into the 1890's.
It seems to me that this is a case of Spain should be given a pass and the US is a meany. You need to realize there is not one nation who's hands are clean.
Sgt. Rafael Peralta ,United States Marine Corps
Company A, 1st Bn, 3rd Marine Regt, 3rd Marine Divison
We will never forget your valor and sacrifice.
Semper Fi !