Kassovitz has said that the idea came to him when a young Zairian, Makome M’Bowole, was shot in 1993. He was killed at point blank range while in police custody and handcuffed to a radiator. The officer was reported to have been angered by Makome's words, and had been threatening him when the gun went off accidentally. Kassovitz began writing the script on April 6, 1993, the day M'Bowole was shot. He was also inspired by the case of Malik Oussekine, a 22-year-old student protester who died after being badly beaten by the riot police after a mass demonstration in 1986, in which he did not take part. Oussekine's death is also referred to in the opening montage of the film. Mathieu Kassovitz included his own experiences; he took part in riots, he acts in a number of scenes and includes his father Peter in another.