Blood Brothers: Muhammad Ali and Malcolm X, a documentary that explores the relationship between Malcolm X and Muhammad Ali, premiered at the Martha’s Vineyard African American Film Festival on Monday.

Produced by Kenya Barris and his Khalabo Ink Society and directed by Marcus A. Clarke, the film is based on Randy Roberts and Johnny Smith’s book Blood Brothers: The Fatal Friendship Between Muhammad Ali and Malcolm X.

Screened at the Martha’s Vineyard Performing Arts Center in Oak Bluffs, MA, the attendees included Barris, Clarke, IIyasah Shabazz (daughter of Malcolm X), Maryum Ali (daughter of Muhammad Ali), and consulting producer Sam Pollard (MLK/FBI, Mr.Soul!).

The film features never-before-seen archival footage that highlights the story behind the friendship and ultimate fallout between the civil rights leader and the boxing legend.

Clarke expressed his excitement about the documentary and looks forward to audiences seeing the iconic figures in new ways.

“Malcolm X and Muhammad Ali are two of the most iconic and revered African Americans of the 20th century, and yet the depths of their friendship and the influence they had on each other is largely unknown,” he said in an interview with Deadline.

Blood Brothers provides a deeper understanding into what made these two men tick, the intense role faith played in their bond and ultimately how their budding friendship came to an abrupt end,” he continued.

In addition to Blood Brothers, Barris and Khalabo Ink Society are also producing an upcoming documentary on civil rights attorney Ben Crump for Netflix.

Clarke directed three episodes of Netflix’s documentary series “Unsolved Mysteries: Volume 1,” as well as three episodes of the Netflix docuseries “Rapture.”

Blood Brothers: Malcolm X & Muhammad Ali will be available to stream on Netflix on September 9.