When Pulitzer Prize-winning author Isabel Wilkerson (Aunjanue Ellis-Taylor) first conceived of the multifaceted premise that would eventually become the lauded non-fiction book “Caste: The Origin of Our Discontents,” her editors were concerned about whether she would manage to cohesively merge her personal experiences with all the moving parts of her research across cultures and continents to prove that it all interconnects. Venice Film Festival 2023: The 17 Most Anticipated Movies To Watch That’s in turn the same task that writer-director Ava DuVernay faced to convey the big-picture ideas and Wilkerson’s revelatory odyssey to put them on the page in an enticingly cinematic manner.