But, in 1906, the Osages outmaneuvered the U.S. government, which was eager to open the new state of Oklahoma the next year. Chief James Bigheart, who spoke seven languages, negotiated the first subsurface mineral trust, according to the Oklahoma Historical Society, which tribal members owned in equal shares. Previously, the United States had forced tribes to split their communities and allotments, making it easier for white colonists to buy and seize their property. 

The Osages established oil royalties, called headrights, among 2229 people, and, in the oil rush of 1920s Oklahoma, the Osages prospered. Their income in 1923 alone was $400 million in today’s money, according to David Grann.

For a time, the Osages became the wealthiest group of people in the world per capita. Their newfound riches, however, sparked jealousy and greed among the surrounding whites. Headrights could only be inherited within families. To work around these restrictions and to access Osage money, local whites married into Osage families — leading to an era called the “Osage Reign of Terror,” which is the focus of Killers of the Flower Moon.

The movie looks like a masterpiece. A $200 million production and a 3.5-hour cinematic experience, it stars Leonardo DiCaprio, Robert De Niro, and the lovely Lily Gladstone of the Blackfeet Tribe. The premiere at the Cannes Film Festival this May received a nine-minute standing ovation, launching major Oscar buzz.

I haven’t seen it yet, but I watched the movie production unfold online with scenes in Pawhuska, the Osage Nation capital. The Osage were regal in colored ribbon shirts and proud eagle feathers. Hundreds participated in the movie, and the tribe has universally praised it. I was moved when Scorsese told the Osage News how, in community with the tribe, over Indian dinners listening to stories told by tribal elders, he’d altered the Grann plot.

No longer would the movie focus on the white FBI agent saving the day; it became a story of love struggling against insidious power. Ernest Burkhart (DiCaprio) and Mollie Kile, an Osage woman (Gladstone), fall genuinely in love — as he joins the execution schemes and she wanes from poison, misdiagnosed as the “peculiar wasting illness.”

This epic Osage tragedy, soon to dominate the zeitgeist, calls out the forces of racism, greed and the feverish, irrational human drive for power.

Today, some legislators and governors seek to whitewash history. The Pulitzer Prize-winning book, The 1619 Project, a reframing of Black history, is banned from some public schools. The prohibition of diverse historical perspectives is a tragedy that could deprive millions of the opportunity for healing and personal growth.  

In my hometown of Tulsa, they didn’t teach us about the Osage Reign of Terror. Nor did they teach the now-infamous Tulsa race massacre of 1921, when mobbing whites burned hundreds of homes and business in the district called Black Wall Street, killing dozens of people and destroying lives for generations. 

Some ask: Why dig up the unhappy past? For me, uncovering my origin stories, the tragedies and successes, has been a source of excitement, growth, and strength. 

We learn our beauty when we learn our history. This spring, I also discovered that my slain Osage grandmother, Mary Lane, was a pianist who loved opera. She and her husband, a dashing piano player at the Pawhuska silent movies, opened The Ryder Music Company, a store on East Main Street. Ryder is my middle name. 

My father, the late Randall R. Morton Sr., half Osage, used his headright to get an education from the University of Oklahoma and then Georgetown Law School. A decorated airman in World War II, he finished his short life at age 45, having been an independent investment banker.

I remember him in a dark suit with a handmade red tie, gentle with fine threading. He had style, a generous smile, and an easy waltz. He was overwhelmed by alcohol and the chain of trauma he didn’t have the tools to heal, tools I’ve been fortunate to have in my own journey of self-discovery and healing. 

The Osage tribe has grown to over 21,000 members throughout the United States, with its own constitution and government. I inherited a 30% headright, amounting to a few hundred dollars a quarter. Along with tribal scholarships, it helped with college tuition for my two children. Both of them are enrolled tribal members and are proud of their heritage. My daughter learns an Osage word every day.

The Flower Moon is an ageless native symbol of abundance. It’s the full moon in May when the American prairies, covered with new flowers, sing with the effervescence of blooming moonlight, displacing the fear of darkness.

As the Osage story grows in prominence, I expect the hopeful symbol

An earlier version of this essay appeared in the Houston Chronicle.