Rahel Elena Gultom; M Vigo Ananda Patria; Hafiz Satria Wijaya. UPAYA PREVENTIF INTELIJEN KEIMIGRASIAN DALAM MENCEGAH KERUSAKAN MATERIIL PASCA AKSI DEMONSTRASI DI UPT KEIMIGRASIAN: IMMIGRATION INTELLIGENCE PREVENTIVE EFFORTS TO PREVENT MATERIIL DAMAGE POST TO DEMONSTRATION ACTIONS AT THE TECHNICAL IMPLEMENTATION UNIT OF IMMIGRATION. jlbp 2025, 7, 107-114.