Yes this is the Native North American propaganda. Like I said, there is "some" merit to this. Keep in mind Colombo was Italian, but sailed under funding from Spain. The Spanish were brutal to the new world people they encountered. However, when Colombus first came to the new world, he encountered resistance, not peace.
Later it was reported, during his governance of a small island, that he was involved in a brutal crackdown. But this was after he was so old, that his territory was essentially governed by a second person. If you go to the Carribean the people there are very proud who are from British colonies. But the former Spanish colonies are not happy about the Spaniards.
For those of you who think Colombus is to some way blame for what happened in the Americas let me ask you this. If any other person had discovered the Americas, would we have come to some peaceful conclusion and occupation?