https://en.wikipedia.org/wiki/Videodrome
Max Renn is the president of CIVIC-TV, a Toronto UHF television station specializing in sensationalist programming. Harlan, the operator of CIVIC-TV's unauthorized satellite dish, shows Max Videodrome, a plotless show which depicts the violent torture and eventual murder of anonymous victims. Believing this to be the future of television, Max orders Harlan to begin unlicensed use of the show. Nicki Brand, a sadomasochistic radio host who becomes sexually involved with Max, is aroused by an episode of Videodrome, and goes to audition for the show when she learns that it is being broadcast out of Pittsburgh, but never returns. Max contacts Masha, a softcore pornographer, and asks her to help him find out the truth about Videodrome. Through Masha, Max learns that not only is the footage not faked, but it is the public "face" of a political movement. Masha further informs him that pop-culture analyst Brian O'Blivion knows about Videodrome.
Max tracks down O'Blivion to a homeless shelter where vagrants are encouraged to engage in marathon sessions of television viewing. He discovers the mission is run by O'Blivion's daughter, Bianca, with the goal of helping to bring about her father's vision of a world in which television replaces every aspect of everyday life. Later, Max views a videotape in which O'Blivion informs him that Videodrome is a socio-political battleground in which a war is being fought for control of the minds of the people of North America. Shortly thereafter, Max begins experiencing hallucinations in which his torso transforms into a gaping hole that functions as a VCR. Bianca tells him these are side-effects from having viewed Videodrome, which carries a broadcast signal that causes the viewer to develop a malignant brain tumor. O'Blivion helped to create it as part of his vision for the future, but when he found out it was to be used for malevolent purposes, he attempted to stop his partners; they used his own invention to kill him. In the year before his death, O'Blivion recorded tens of thousands of videos, which now form the basis of his television appearances.
Max is contacted by Videodrome's producer, the Spectacular Optical Corporation; an eyeglasses company that acts as a front for a weapons manufacturer. The head of Spectacular Optical, Barry Convex, has been secretly working with Harlan to get Max exposed to Videodrome and to have him broadcast it, as part of a conspiracy to give fatal brain tumours to "lowlifes" fixated on extreme sex and violence. Convex then inserts a brainwashing video tape into Max's torso. Under Convex's influence, Max murders his colleagues at CIVIC-TV, and later attempts to murder Bianca, but she manages to stop Max by showing him a videotape of Nicki being strangled to death. Bianca then 'reprograms' Max to kill Harlan and Convex on her orders. Afterwards, he takes refuge on a derelict boat, where Nicki appears to him on a television. She tells him he has weakened Videodrome, but in order to completely defeat it, he must ascend to the next level and "leave the old flesh". The television then shows an image of Max shooting himself in the head, which causes the set to explode. Reenacting what he has just seen on the television, Max utters the words "Long live the new flesh" and shoots himself.