Saw Killers of the Flower Moon last night, and it's haunting

Such an impactful movie. I think the length of the movie really made it. They could have been a little more clear and elaborate at the end about what happened to the people involved. I didn't keep track of the years, and 1957 and other years they mentioned meant nothing to me. I went and read the Wikipedia of King and Earnest, and that made me feel a lot more shock and anger than the end of the movie. Overall a haunting masterpiece. What did you think of it?