Why is Amazon censoring black opinion, lives, and opinions?

Why did Amazon, owned by the richest man in the world, find this film offensive? Another agency who decides who is black enough or liberal enough to be heard and seen? What are they afraid of?
"Early last month [Black history month, just in case you've forgotten] Amazon deleted a documentary film about Justice Clarence Thomas from its popular streaming service. Titled “Created Equal: Clarence Thomas in His Own Words,” and culled from more than 30 hours of interviews with its subject, the film recounts Justice Thomas’s rise from poverty in segregated Georgia to Yale Law School and, eventually, to the Supreme Court." . . .

 
Last fall, Eli Steele’s “What Killed Michael Brown?”—a critique of liberal social policies that was written and narrated by his father, the race scholar Shelby Steele—was slated to stream on Amazon in October, then held up for reasons the company never fully explained. Amazon eventually relented and made the film available, but only after these pages weighed in and made a fuss." Wall Street Journal, March 2, Jason Riley