ordinary circumstances. In Dr. Ram Manohar Lohia v. State of Bihar(1), it was held by the majority decision of this Court that the expression "public order" was different and does not mean the same thing as "law and order". The question at issue in that case was whether the order of the District Magistrate, Patna under Rule 30(1)(b) of the Defence of India Rules, 1962 against the petitioner was valid. Rule 30( 1 )(b) provided that a State Government might, if it was satisfied with respect to a person that with a view to preventing him from acting in a manner prejudicial to 'public safety and maintenance of public order' it is necessary to do so, order him to be detained. The order of the District Magistrate stated that he was satisfied that with a view to prevent the petitioner from acting in any manner prejudicial to the 'public safety and the maintenance of law and order,' it was necessary to detain him. Prior to the making of the order the District Magistrate had, however, recorded a note stating that having read the report of the Police Superintendent that the petitioner's being at large was prejudicial to 'public safety' and 'maintenance of public order', he was satisfied that the petitioner should be detained under the rule. The petitioner moved this Court under Art. 32 of the Constitution for a writ of habeas corpus directing his release from detention, contending that though an order of detention to prevent acts prejudicial to public order may be justifiable ,an order to prevent acts prejudicial to law and order would not be justified by the rule. It was held by the majority judgment that what was (1) [1966] 1 S.C.R. 709, meant by maintenance of public order was the prevention of disorder of a grave nature, whereas, the expression 'maintenance of law and order' meant