There actually was an organized mass murder of indians. Take california for example. As soon as the US stole it from mexico they couldn't wait to come over and shoot every indian dead to settle it. I remember from one book that contained the words of this awful man... "I just didn't have the heart to shoot the little ones with my rifle, had to use the revolver". The only 'scalping' im aware of was by settlers scalping indians for bounty and trophies, heck entire human pelts even. It was against the law to be indian pretty much everywhere. And still is for that matter, most indians today go to prison instead of college. Except for the lucky few who thank god have access to casino money, but as much as the news tries to lead people otherwise, thats few and far between. I know for a fact that one casino is run by people who were squatters on the reservation and not even indian, and it was one of the first casinos to go up a while back. I bet quite a number of them are a bit dubious as to their 'heritage' too, wouldn't be surprised if some major banker owned a few to be honest.
Believe me, there is alot misunderstood about indians, and african americans for that matter. Burn your darn TV and use some critical thought, do you think its even remotely possible that a conquering power may oh, LIE, to cover up atrocities? You have to dig a bit to learn the truth, but its there. Yes, indians weren't perfect either, but if you look you will also find that they were not the enemy. They shared so many things with their conquerers, signed so many treaties, and every single time their back was turned WHAM, and another broken treaty.