Elio Petri (29 January 1929 – 10 November 1982) was an Italian political filmmaker.
The 25th Cannes Film Festival was held from 4 to 19 May 1972.
 The Palme d'Or went to the "La classe operaia va in paradiso" by Elio Petri and "Il Caso Mattei" by Francesco Rosi.
René Clément (] ; 18 March 1913 – 17 March 1996) was a French film director and screenwriter.
Todo modo is a 1976 Italian drama film directed by Elio Petri.
 It is based on a novel of the same name by Leonardo Sciascia.
The Assassin (Italian: "L'assassino" ) is a 1961 Italian crime film directed by Elio Petri.
 It is the feature film debut of Petri.
 It was entered into the 11th Berlin International Film Festival.
The 10th Victim (Italian: "La decima vittima" ) is a 1965 Italian-French science fiction film directed by Elio Petri and starring Marcello Mastroianni and Ursula Andress, and featuring Elsa Martinelli in a supporting role.
 The picture is based on Robert Sheckley's 1953 short story "Seventh Victim".
 Sheckley later published a novelization of the film in 1966, and two sequels ("Victim Prime" and "Hunter/Victim") in 1987 and 1988, respectively.
 In the United States, the film was theatrically released by Joseph E. Levine's Embassy Pictures.
Good News (Italian: "Buone notizie" ) is a 1979 Italian satirical comedy film written and directed by Elio Petri and starring Giancarlo Giannini.
 It is the last film of Petri.
I giorni contati (internationally released as His Days Are Numbered, "The Days are Numbered" and "Numbered Days") is a 1962 Italian drama film directed by Elio Petri.
 It was awarded best film at the Mar del Plata Film Festival.
 It also won the Silver Ribbon for Best Original Story.
Property Is No Longer a Theft (Italian: La proprietà non è più un furto ) is a 1973 Italian comedy film directed by Elio Petri.
 It was entered into the 23rd Berlin International Film Festival.
We Still Kill the Old Way (Italian: A ciascuno il suo ) is a 1967 Italian crime film directed by Elio Petri.
 It was entered into the 1967 Cannes Film Festival where it won the award for Best Screenplay.
 It is based on the novel "To Each His Own" by Leonardo Sciascia.

Question: What kind of film making do René Clément and Elio Petri do
Answer: political