Answer:
Well I have a whole rant on this but basically it's mostly because of the history of it all. If you think about it, they're the least represented minority in the U.S. in the first place and they have a greater chance of death before any other race. They have done next to nothing to Americans, yet Americans continuously ignore them. Columbus and other people who came to the America's slaughtered many Native Americans while calling them savages for trying to protect their own people and the land. If you think about Pocohontas, you think of the Disney version, right? No. She was a young teenage girl who was taken by English people. Sacagawea was another Native American teenager who helped Lewis and Clark navigate the what was soon to be Louisiana Purchase area. She was pregnant while climbing mountains with them! Many Native Americans don't live in tipi's, only certain tribes have feather headdresses, and not all of them live on reservations. It's honestly crazy that we even have these misrepresentations from all of those years ago translating into today.