Conversation so far:
Did Babrak Karmal write The Fundamental Principles?
It is unclear if Babrak Karmal created the Fundamental Principles of the Democratic Republic of Afghanistan on his own, but he definitely is credited with enforcing these policies.
What were the Fundamental Principals?
The Fundamental Principles: guaranteed freedom of speech, the right to security and life, the right to peaceful association, the right to demonstrate and the right to a fair trial.

Question: Was this supported by the public?
Self-contained rewrite: Was the Fundamental Principles supported by the public?