Yes, it was complex. However, fundamentally, they had the land and we wanted it. We pushed and pushed, and unlike when Iraq invaded Kuwait, no one was there to stop us (which was good for us).
No one is denying the Native American right to fight for their lands. But it’s only the overall story.
The precise story of each event isn’t constantly in the favors of the Indians. The example on the video is illuminating: “peaceful Indians”, as we call them today, killed hundreds of settlers, massacred white hostages and were eventually defeated. Should the USA being prosecuted for having defeated the Native Americans in that occasion ?
NO.
The concept of property rights was European and codified until recently by The Constitution. "Tribal" lands were held not by the rule of law but by the rule of man. The Unisted States Government signed peace treaties with various tribes and granted them rights to specific lands in exchange for ending their hostilities.