Lo que vendrá (1988)

Against the backdrop of an increasingly-powerful police state, Miguel returns to Buenos Aires. An innocent bystander, he's shot by a rogue cop, Morea, at a political demonstration. To avoid scandal, the police place Miguel in the hospital as a John Doe, where nurses are drawn to his bedside. A tipster notifies the press and Miguel's father and also phones Morea with threats to expose and even kill him. Meanwhile, Miguel is in a coma, able to hear but not speak. Eventually he rouses himself and begins his own hunt for Morea, who remains calm, cool, and lethal. After the drama of cop, victim, and vigilante plays out, there may be worse times to come.