Babrak Karmal befriended fellow inmate Mir Akbar Khyber, who introduced Karmal to Marxism. Karmal changed his name from Sultan Hussein to Babrak Karmal, which means "Comrade of the Workers'" in Pashtun, to disassociate himself from his bourgeois background. When he was released from prison, he continued his activities in the student union, and began to promote Marxism. Karmal spent the rest of the 1950s and the early 1960s becoming involved with Marxist organizations, of which there were at least four in Afghanistan at the time; two of the four were established by Karmal. When the 1964 Afghan Provisional Constitution, which legalised the
Babrak Karmal Pashto. Karmal was born in Kamari, a village close to Kabul. He attended Nejat High School, a German-speaking school, and graduated from it in 1948, and applied to enter the Faculty of Law and Political Science of Kabul University. Karmal's application was turned down because of his student union activities. He studied at the College of Law and Political Science at Kabul University from 1951 to 1953. In 1953 Karmal was arrested because of his student union activities, but was released three years later in 1956 in an amnesty by Muhammad Daoud Khan. Shortly after, in 1957, Karmal found work