Leonardo DiCaprio.Photo:Ethan Miller/Getty

Leonardo DiCaprio attends a filmmaker luncheon honoring Martin Scorsese with the Legend of Cinema Award during CinemaCon, the official convention of the National Association of Theatre Owners, at Caesars Palace on April 27, 2023

Ethan Miller/Getty

Leonardo DiCapriothinks Hollywood has work to do in regards to past portrayals of Native American people.

DiCaprio, 48, and hisKillers of the Flower Mooncostar Lily Gladstone spoke toVogue UKprior to the ongoing actors' strike. In the interview, they expressed their appreciation for the way theMartin Scorsese-directed filmdepicts an era known as the Reign of Terror among members of the Osage Nation.

“Hollywood has a long history and checkered past in its depiction of Native American people,” DiCaprio said. “We need to do more. You know, we are coming towards a great reckoning of our past."

He added, “The more that these stories can be told in a truthful way, the more it can be a healing process.”

The movie is based on David Grann’s 2017 bestsellerKillers of the Flower Moon: The Osage Murders and the Birth of the FBI, and tells the true story of Ernest Burkhart (DiCaprio) and Mollie Kyle (Gladstone).

The unlikely pair became a couple after Burkhart moved to Oklahoma in the 1920s in hopes of striking it rich in the Osage oil boom.

At the time, the Native American people living on the Osage Reservation were in large part independently wealthy thanks to the oil on their land. Their prosperity ended when White residents orchestrated a series of killings targeting the Osage people.

Lily Gladstone and Leonardo DiCaprio in “Killers of the Flower Moon,” coming soon to Apple TV+.

Shedding light on this forgotten piece of history is part of what drew DiCaprio and Gladstone to the film.

“It’s not that long ago that the Reign of Terror happened,” Gladstone said. “I don’t want to label this a Western. I’m happy that it’s being labeled a tragedy.”

DiCaprio added, “It’s a completely forgotten part of American history and an open wound that still festers.”

While the production crew behind the film was largely White,Vogue UKnoted the Osage leader, Principal Chief Geoffrey Standing Bear, gave the movie his full support. For her part, Gladstone sees the production crew as allies.

“Nobody is going to hand an Osage filmmaker $200 million,” she told the outlet. “There’s a level of allyship that’s absolutely necessary.”

Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.

DiCaprio noted the parallels between the Reign of Terror andthe Tulsa Race Massacre. DiCaprio stayed in Tulsa while the movie was filming, and he toldVogue UKhis time in Tulsa coincided with both the 100 anniversary of the first murder of the Black Wall Street Massacre, as well as the beginning of the Reign of Terror on the Osage Nation.

“It was very important to me to realize these were two sides of the same coin … people of color that were independently wealthy amid a massive population of incredibly racist White people who want to extract those resources at any cost,” he said.

“Look at Standing Rock. Look at what’s going on in Indonesia, in the Amazon. These places that are home to incredible resources are also places that are most drenched in blood.”

Leonardo DiCaprio.Kevin Mazur/Getty

NEW YORK, NEW YORK - DECEMBER 05: Leonardo DiCaprio attends the “Don’t Look Up” World Premiere at Jazz at Lincoln Center on December 05, 2021 in New York City. (Photo by Kevin Mazur/Getty Images for Netflix)

In addition to DiCaprio and Gladstone,Killers of the Flower Moonalso stars Robert De Niro, Jesse Plemons, Tantoo Cardinal, John Lithgow, Brendan Fraser and Cara Jade Myers.

Scorsese, 80, recentlytoldTimemagazinehe rewrote a draft ofKillers of the Flower Moonto shift it from being centered on the White characters.

“After a certain point, I realized I was making a movie about all the White guys … meaning I was taking the approach from the outside in, which concerned me,” he said.

source: people.com