A.K. GOPALAN vs THE STATE OF MADRAS.UNION OF INDIA: INTERVENER.

The Supreme Court examined the validity of the Preventive Detention Act, 1950, particularly Sections 7, 8, and 10, in light of Articles 13, 19, 21, and 22 of the Constitution. The Court held that the provisions of the Act do not infringe upon the fundamental right to freedom of movement, but emphasized that the right to personal liberty under Article 21 includes the principles of natural justice. The judgment clarified that the law must provide an objective standard for detention and that the absence of such provisions renders the law unconstitutional.