Native Americans have a history of being poorly represented by media, and it doesn't take a genius to figure out that it's because of deep-rooted colonial prejudice. In a lot of classic Westerns, for example, Indigenous people were reduced to hoards of barbaric savages whose only function was to attack the (usually white) heroes. Even attempts at change in the late 20th Century ended up creating a different stereotype by portraying Indigenous characters as mystics. "Cowboys and Indians" was a popular children's game for decades. Millenials today still grew up in the last era where it was socially acceptable to refer to the Indigenous population as "Indians."