From Wikipedia

https://en.wikipedia.org/wiki/A_Serbian_Film

"A Serbian Film (Serbian: Српски филм, translit. Srpski film) is a 2010 Serbian horror film produced and directed by Srđan Spasojević, in his feature film debut. Spasojević also co-wrote the film with Aleksandar Radivojević.[2] It tells the story of a financially struggling porn star who agrees to participate in an "art film", only to discover that he has been drafted into a snuff film with pedophilic and necrophilic themes. The film stars Serbian actors Srđan Todorović and Sergej Trifunović.

Upon its debut on the art film circuit, the film received substantial attention for its graphic depictions of rape, necrophilia and child sexual abuse. The Serbian state investigated the film for crime against sexual morals and crime related to the protection of minors.[3] The film has been banned in Spain, Germany, Australia, New Zealand, Malaysia, Singapore, Norway, and South Korea, and was temporarily banned from screening in Brazil."

This movie has multiple scenes of child rape. The first time it's implied when they show a woman give birth to a baby, then a man smiles at the camera and takes off his clothes and it switches to the main character who is horrified and you can hear the baby screaming.

"Miloš sees a young woman being physically abused and scolded by her mother, having disgraced her deceased war hero husband's memory by becoming a prostitute. In a dark room, screens show Jeca, a girl of indeterminate age, seductively eating an ice pop, while Miloš is fellated by a nurse. Then, Miloš is instructed to receive fellatio from the mother, while Jeca watches. Miloš refuses, but is forced to continue. Marko later informs him that Vukmir is a former psychologist and has worked in children's television and state security. Miloš meets with Vukmir, announcing that he is retiring and dropping out of the film, but Vukmir explains to a hesitant Miloš his artistic style of pornography, showing a film of a woman giving birth to a newborn baby, a baby which is then immediately raped by Raša, much to the joy of the mother. The disgusted and horrified Miloš storms out and drives away as Vukmir boasts to him that this is "a new genre" and that he terms it as "newborn porn". At a road junction, being in a disturbed state of mind, he is approached and seduced by an attractive woman who, unbeknownst to him, is Vukmir's doctor."

Second time it shows it. The father in the movie is an ex pornstar who has retired and had his own family. He is drugged and and tricked into doing every horrific thing possible to woman and children. In one scene he rapes a woman and tortures her as he does it. At the end of the film in a drugged state he rapes his wife then proceeds to sodomize his 8 year old son in graphic detail. The movie shows the man raping him and blood and shit going everywhere. Then it shows the boys face dazed out with cum on him.

"At the warehouse, Vukmir's doctor administers more drugs to Miloš, who in an angry outburst sticks a syringe into her neck, rendering her unconscious from the overdose. He is then taken into a big room, where he is conducted to have intercourse with two hidden bodies placed under sheets and with bags on their heads. Miloš furiously begins penetrating them while keeping them restrained, and as he swaps from one onto the other, the masked man from Lejla's film enters and begins raping the first. Vukmir then reveals the masked man to be Marko, his victim to be Marija, and finally, that Miloš is raping Petar. At this moment, the agonizing female doctor enters the room, with her crotch entirely covered in blood and a bloody pipe on her hand, attracting everyone's attention before collapsing dead. Snapping, an enraged Miloš lunges at Vukmir and repeatedly smashes his head against the floor, initiating a brawl during which Marija bites off a piece of Marko's neck, then bludgeons him to death with a sculpture. Miloš wrestles with the guards and seizes one of their guns, shooting both of them and injuring the one-eyed Raša, whom he kills by ramming his erect penis into his empty eye socket. During all of this, a dying Vukmir praises Miloš's actions as truly worthy of cinema.

The father finds out what he does and kills the traffickers and rescues his family. In horror when he gets home they all decide to kill themselves the whole family. Traffickers come in the room and begin to set up and he tells one of them "start with the little one"

Despite saying it was fake and done with digital effects and not a real child it sure looks like it. The movie features multiple instances of pedophilia and child torture. It is banned in multiple countries.

This is the interview with it's sick director Srdjan Spasojevic.

http://www.indiewire.com/2011/10/we-interview-the-director-of-a-serbian-film-now-on-dvd-and-yes-the-movie-deserves-its-rep-51495/

There's a reason they call this the sickest movie in the world. Pure horrific filth that for all purposes is child porn.