- Preventive detention involves detaining a person to prevent them from committing a future crime or acting in a manner prejudicial to state security, public order, or maintenance of supplies, rather than punishing a past crime. - Article 22 of the Indian Constitution provides procedural safeguards for preventive detention, though these are much narrower than those for punitive detention. - Supreme Court guidelines repeatedly emphasize that preventive detention is an exceptional power and must be exercised with extreme caution to protect personal liberty under Article 21. - Protests and public demonstrations often test the balance between maintaining public order and safeguarding democratic rights to dissent. **Introduction** The article explains the legal provisions, constitutional safeguards, and judicial checks surrounding preventive detention in India, in the context of protests and detentions in New Delhi. It breaks down the distinction between punitive and preventive detention under Article 22 of the Constitution and statutory frameworks like the National Security Act. **Core Issue and Detailed Points** - Preventive detention involves detaining a person to prevent them from committing a future crime or acting in a manner prejudicial to state security, public order, or maintenance of supplies, rather than punishing a past crime. - Article 22 of the Indian Constitution provides procedural safeguards for preventive detention, though these are much narrower than those for punitive detention. - Supreme Court guidelines repeatedly emphasize that preventive detention is an exceptional power and must be exercised with extreme caution to protect personal liberty under Article 21. - Protests and public demonstrations often test the balance between maintaining public order and safeguarding democratic rights to dissent.