Yet another perfect example of how you know nothing of which you were talking about.
To the Indian cultures, you could not "steal land". This is because you also could not "own land". They found the very concept silly and amusing, as even the most agrarian rarely stayed in an area for longer than 5-10 years. The very concept that somebody could own anything beyond what they could carry on their back was insanity to them. You could no more "own the land" than you could own the river, sky, or deer.
Hell, look at the history of the earliest contacts on the East Coast. Largely peaceful, and most times if some settlers want to inhabit an area, they went to the local tribe and simply asked for permission. Most times it was granted, sometimes with a payment of trade goods. And as these tribes rarely stayed beyond a few years, they happily moved on to another area, richer and laughing at the silliness of the "Whites".
Hell, even the most famous of these "land purchases" was a giant scam, done by the Indians. In 1626, Peter Minuit landed in what is now Manhattan, and after looking he found a band of Indians hunting there. He entered into negotiations, and "bought" the entire island for $24 in trinkets (about $1,000 today). But the funniest thing is, he bought it from the Canarsees, who did not even live there! That was actually land occupied by the Weckquaesgeeks. They of course became incensed, but Minuit entered into negotiations with them, and gave them $24 worth of trade goods in exchange for Staten Island and their claim on Manhattan. And satisfied, the Weckquaesgeeks happily moved on.
Quite literally, what happened would be repeated centuries later when scam artists would "Sell the Brooklyn Bridge".
I can only imagine you are not Indian at all, and never lived near a reservation. I am, and have. You have absolutely no idea what you are talking about, and are just parroting things you were told by others. And if there was an "Indian Genocide", it was the worst one in the history of the planet. At the turn of the 19th century, there were around 600,000 Indians in North America. Today, we number in excess of 5 million. I have never heard of a "genocide" where many times the number exist after the genocide itself.