The goal of these people for centuries has been to eradicate the ancient knowledge carried by these the native people's of different lands. The same thing happened here. Everyone gets all caught up in the idea of "the founding fathers" and all however it's important to understand where these guys come from......they were Masons. They threw out the old line of "we're looking to get away from oppression of the church" however their very roots are that of the Templars who were errand boys of the church. Of course, they ended up turning on their boys just as all the others have in the past with their gophers.
These Masons came here with their own army of "religious extremist" who, under orders of leaders claiming to be independent of the church, carried out the extermination of the these native peoples under the banner of the church. I don't want it to sound as if I'm damning Christians or anything because the people behind all of this are the furtherest thing from the "Christ consciousness" as they can be. They used the monotheistic teachings of these Atonist in order to manipulate the minds and heart of the people who came over with them. For fear of "going to hell", they did as they were told. This has been the goal of the Atonistic, Saturnian groups who have been controlling humanity for a long time.
Going back to the ancient texts, there is a hidden history that they don't want the people to know because this would empower them beyond belief. They would understand their origins, what "God" is and even who is in control. These Native peoples carry this knowledge in their myths and stories so as far as the controllers are concerned.....they want them gone. It's certianly a crime against humanity on many different levels.