Indians were killing Indians like it was their full time job for centuries before white Europeans set foot on the continent. The most civilized among the Western Indians, the Anasazi, were cannibals. French priests named them “savages” for a reason. Its because they were. They decimated species of animals all over the continent for a milenium leaving tens of thousands of whole buffalo rotting where they were killed after eating a leg. The three legged carcasses are all over the west. Over 20,000 bison were killed by running whole herds off a single cliff near Beulah Wy. The cover up of their disgraceful history is what created the biggest myth of the American West.
Not to manage how much of the plains were set on fire every year to hunt game.