Conversation so far:
Was Babrak Karmal a communist?
Yes, Babrak Karmal was appointed Deputy Chairman of the Revolutionary Council, synonymous with vice head of state, in the communist government.
What was Babrak Karmal in prison for?
In 1953 Babrak Karmal was arrested because of his student union activities.
What did Babrak Karmal do to promote Marxism?
Babrak Karmal spent the rest of the 1950s and the early 1960s becoming involved with Marxist organizations; two of the four were established by Karmal.
What were the Marxist organizations in Afghanistan during the early 1960s?
The People's Democratic Party of Afghanistan was established in January 1965 in Nur Muhammad Taraki's home was one of the few communist organizations at the time.

Question: Which new political entities did it legalize?
Self-contained rewrite: Which new political entities did the People's Democratic Party of Afghanistan legalize?