This document details the Supreme Court case of Kharak Singh vs. State of Uttar Pradesh, concerning the fundamental right to personal liberty and freedom of movement under Article 21 of the Indian Constitution. The case primarily addresses the validity of police surveillance methods, specifically 'domiciliary visits', and whether they infringe upon citizens' constitutional rights. The judgement explores the scope of personal liberty and its relationship with privacy, ultimately striking down certain surveillance practices as unconstitutional.