"What’s So Hard About Casting Indian Actors in Indian Roles?"

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For “Wind River,” that system involved an intertribal collaboration. Leaders from the Wind River nations — the Eastern Shoshone and Northern Arapaho — read the script and visited the set. The Tunica-Biloxi tribe of Louisiana had no actors in the film but provided 90 percent of the film’s budget in a joint venture with Acacia Entertainment. Marshall Ray Sampson, the tribe’s vice chairman, explained, “We are always looking for ways to diversify our portfolio.”

Though the quest for authenticity was a community effort, Mr. Sheridan said, “As a filmmaker you have to stand in front of what you did and make choices that you could do with a clear conscience.”"

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