Conversation so far:
Please tell me something interesting about the communist politics
Imprisoned from 1953 to 1956, Karmal befriended fellow inmate Mir Akbar Khyber, who introduced Karmal to Marxism.
Did Babrak Karmal take 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.
what about after his release from prison?
When Babrak Karmal was released from prison, he continued his activities in the student union, and began to promote Marxism.

Question: How did he get into politics?
Self-contained rewrite: How did he get into politics?