Its emotional sting is so sharp that Iranian state media is seeking to dismiss the heart-rending scene as a fake aimed at sapping national morale, in an effort that was refuted by online sleuths.
Filmed inside the Kahrizak forensic complex, the film shows rows of black body bags laid side by side spilling onto outside pavements on a blustery day.
The father calling out again and again to his missing son Sepehr as if he could answer as he navigates among hundreds of bodies and shrieking loved ones.
Over the course of nearly twelve minutes, the father moves through the nightmarish space, stepping past blood trails left by dragged corpses and parents opening body bags to discover slain sons.
His voice trembles as he calls out: “Sepehr, daddy's Sepehr, where are you, my son? Sepehr, get up, I’ve come for you! I’ll find you, son!”
Screams and sobs from disconsolate relatives punctuate his walk. “Khamenei, you bastard, may God curse you," he finally mumbles weakly. "Come and see what you’ve done … you’ve killed so many young people.”