The Great Dictator a ruthless fascist dictator and a persecuted Jewish barber. "The Great Dictator" was popular with audiences, becoming Chaplin's most commercially successful film. Modern critics have also praised it as a historically significant film and an important work of satire, and in 1997, it was selected by the Library of Congress for preservation in the United States National Film Registry as being "culturally, historically or aesthetically significant". "The Great Dictator" was nominated for five Academy Awards – Outstanding Production, Best Actor, Best Writing (Original Screenplay), Best Supporting Actor for Jack Oakie, and Best Music (Original Score). In his 1964 autobiography, Chaplin
Dictator use of psychiatry as a political weapon and the denial of freedoms of religion, assembly, speech and association. Pol Pot became dictator of Cambodia in 1975. In all, an estimated 1.7 million people (out of a population of 7 million) died due to the policies of his four-year dictatorship. As a result, Pol Pot is sometimes described as "the Hitler of Cambodia" and "a genocidal tyrant". The International Criminal Court issued an arrest warrant for Sudan's military dictator Omar al-Bashir over alleged war crimes in Darfur. In social choice theory, the notion of a dictator is formally defined as a