Article 13 of North Korea’s 1948 Constitution grants citizens “freedom of opinion, publication, assembly, and freedom to form associations, or participate in public demonstrations” and the freedom to join a variety of social, political, and economic organizations.

References:

Constitution of the Democratic People’s Republic of Korea, 1948. Central Intelligence Agency (1951), World Constitutions Illustrated, HeinOnline: https://heinonline.org/HOL/COWShow?collection=cow&cow_id=310