About Mehmet Ali Aybar
Mehmet Ali Aybar was a lawyer, member of the Turkish parliament, the second president of the Workers Party of Turkey, the founder and President of the Socialist Revolution Party, and a member of the Russell Tribunal against the war crimes of the United States in Vietnam. He is known as one of the most prominent proponents of democratic socialism in Turkish political history. Aybar was also a member of the International War Crimes Tribunal which was founded by Bertrand Russell. After his release from prison in 1962, he became the first leader of the Workers' Party of Turkey. In 1975 he founded Socialist Party (later called Socialist Revolution Party).
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.