Killings went both directions. The natives spent plenty of time killing whites as well as other natives.First of all, there were literally thousands of treaties signed by the colonists and later US ambassadors to the natives.
So then, YES the natives are able to produce the "title" to the land and can show that we stole it.
But clearly if a tribe is illiterate and has no paperwork, that does NOT give anyone the right to murder them and take their land.
As for the treaties, can you say definitively that the natives didn't break their agreements as often as anyone else did? I know whites are supposed to be the villains according to the official narrative, but I'm more interested in facts that opinions.