Native Americans were not the victims of genocide.....they were the victims of progress. The Europeans were constructing ships, cities, and scientific advances....the N.A's were utilizing bows and arrows and teepees. If the Europeans had not come, than the Arabs would have....or the Chinese....or someone else, all with the same results.
Advancement of mankind and the sciences is never pretty, always ugly. "Good feelings" and "sensitivity" does not foment progress. The vast majority of the great discoveries came during troubled times......world wars, plagues, diseases, terrorist threats, great wrongs, etc....
You can pull up all the supporting quotes you want to support your worldview, but it simply does not, and cannot, exist.