Odd historical discovery:
Reenactment of the Massacre at Wounded Knee by Buffalo Bill – When you read about examples like this, you realize that we’ve come a long way as a society. This early film was banned in 1906 for portraying Native Americans in a sympathetic light during the events which led to the deaths of 146 Sioux and 25 American soldiers. Even though you won’t be able to find the film on Amazon or Netflix, I wanted to include it as an interesting historical footnote.
Also mentioned on Wikipedia's list of films banned in the US, with the same rationale for its censorship, and yes, it appears that Buffalo Bill made the film.