Acolytes of Argentine auteur Lucrecia Martel are accustomed to patience. In 25 years she’s made just five features, of which the latest, the long-gestating “Landmarks,” is her first foray into nonfiction filmmaking. A slow-burning, increasingly incensed unraveling of a horrific murder case underpinned by colonialist privilege and prejudice, it too demands patience of its viewers […]