Before I begin, it has been well documented that the overwhelming majority of those Native Americans you cited died out due to weak immune systems; unable to handle the pox that European settlers brought with them. Now that your first misrepresentation has been formally trashed allow me to deconstruct the rest.
The conflict principle transcends cultures, races, and ethnicities. Therefore, the question is not whether whites were evil in dominating others, ALL civilizations utilized their technology to dominate others, but whether others would have done the same to whites if the tables were turned. The answer to that question is a resounding YES. Thus, the fallacy of your thinking is clear.
Whites dominated the world not because of racial superiority, but cultural superiority that led to technological superiority. They indeed had an incentive to produce such a culture. They were never but a moment away from war with other white cultures. Hence they raced each other to colonize Africa, Asia, and the Americas, so that they would remain economically competitive against each other and therefore militarily dominant against a war with other white cultures.
The fact that others who were taken over by whites could not band together to flush out invaders is telling. Whites used warring Native American tribes against each other just as they used warring African tribes against each other to their advantage. Generally, whites would go to the losing tribe and offer technologically advanced weapons to them in return for land, treaties, and alliances. Now we must again ask ourselves if this would have happened to whites if the situation was reversed for Native Americans, Africans, or Asians. Indeed, they held the same practices in their smaller and technologically less advanced societies. The answer must be yes.
With that said it is also telling that Japan was never colonized. They did not resist white imperialism because they knew they could not. Instead they took the strengths that white culture produced, adopted them, and quickly became a world power. Indeed, this is how civilizations advance. They took what works from the working model and applied it to themselves. For the past 300 years whites have held the working formula. It has nothing to do with racial superiority, but cultural and technological superiority. So Japan became stronger due to white imperialism, as did every other country (colonized or not) with the technology that with introduced into their cultures.
The wars created by whites were so violent simply because whites ruled the world due to cultural and technological superiority. You cannot tell me that the violence that whites created would not have happened if the shoe was on the other foot. Your argument is a whole bunch of unfounded leftist gobbly gook designed on stoking hatred toward the working model of mainstream Western Civilization so as to replace it with the failed western ideology of Marxism which has led to the destruction of untold millions of domestic populations in their various countries. With that said you aren't really against western ways of thought, you just don't like the current Western Model. Indeed, you are attempting to discredit one civilization with/for an ideology produced by that same civilization. You don't really care about other peoples, you simply want them to be pressed under a different western ideology.
Well there you go. I have answered your question and more. Your argument has been deconstructed, discredited, and proved null and void. Have a nice day. Now enjoy this Japanese orchestra playing Beethoven. You're welcome Japan. In Japan no dispute about No. 1 holiday song - CBS News