Wait, what? No one came here intending to kill the natives?

Well, I suppose originally that is because they didn't know they were here....

But once they were here, it's ok for them to kill natives, because they didn't intend to do it when they first came?

And, sadly, plenty of people did move over here, intending to kill off natives.

There are plenty of families who had some relative who came over, wanted to move out west, but gosh dang it! There were just too many natives. So they wrote letters back home to cousins Wilbur and Cletus saying what great land there was over here, but they needed help eliminating all those pesky natives!