Saving of laws on anti national activities preserves existing statutes and grants Parliament exclusive power to legislate. The provision insulated laws targeting anti national activities from invalidation under fundamental rights, vested exclusive legislative power in Parliament over such matters, and preserved existing laws until Parliament amended or repealed them; it defined 'association', 'anti national activity' (including attempts at territorial cession, threats to sovereignty, overthrow by force, internal disturbance, disruption of public services, and threats to communal harmony) and 'anti national association' by object, encouragement, or member conduct.