The Intersection of Constitutional Mandates and the Criminal Justice System in India

Every time a person is arrested in India, a set of invisible constitutional shields activates around them. These are not just legal formalities – they are fundamental rights embedded in the Constitution of India that define how the state can and cannot treat an individual accused of a crime. The relationship between constitutional mandates and the criminal justice system in India is not merely academic. It determines whether justice is truly accessible to all, whether the powerful can act arbitrarily, and whether the accused retains their dignity even in the dock. At the heart of this relationship are Articles 20, 21, and 22 of Part III of the Constitution – provisions that collectively form the backbone of criminal jurisprudence in India.

The principle of natural justice and its constitutional roots 🔗

Before getting into specific articles, it is important to understand the broader principle that underpins all of them: natural justice. Natural justice refers to the fundamental standards of fairness and procedural equity that any legal proceeding must meet. It embodies two core ideas – audi alteram partem (hear the other side) and nemo judex in causa sua (no one should be a judge in their own cause). In India, Articles 20, 21, and 22 of the Constitution form the core of natural justice protections in criminal jurisprudence, ensuring that individuals are treated with dignity and that state power is not exercised arbitrarily. These constitutional provisions serve as a check on the legislature, the executive, and law enforcement – all at once.

Article 21: The heart of the Constitution 🔗

If there is one provision that defines the intersection of constitutional law and the criminal justice system, it is Article 21. In just a single sentence, it states that no person shall be deprived of their life or personal liberty except according to a procedure established by law. The Supreme Court has described it as the “heart of fundamental rights,” and its evolution through judicial interpretation tells the story of how constitutional guarantees are living, breathing protections rather than static text.

Initially, the Supreme Court interpreted Article 21 narrowly. In A.K. Gopalan v. State of Madras (1950), the court ruled that the article only protected against arbitrary executive action – not arbitrary legislation. As long as a law existed, the state could curtail personal liberty through it, regardless of how unfair that law might be. This interpretation left citizens vulnerable to unjust legislation.

The turning point came with Maneka Gandhi v. Union of India (1978), where the Supreme Court dramatically broadened the scope of Article 21. The court held that any procedure depriving a person of life or liberty must not just exist in law – it must be right, just, and fair. The judgment also held that Articles 14, 19, and 21 are not isolated from each other but must be read together as an integrated whole. This single ruling opened the floodgates for the Supreme Court to read a wide range of rights into Article 21.

Rights that flow from Article 21 🔗

Through successive judgments, the Supreme Court has recognised several rights as flowing directly from Article 21’s guarantee of life and personal liberty. These include:

Right to privacy: In the landmark K.S. Puttaswamy v. Union of India (2017), a nine-judge bench unanimously declared the right to privacy a fundamental right under Article 21. This has significant implications for the criminal justice system – particularly regarding state surveillance, data collection, and the use of biometric technology in investigations.

Right to legal aid: In Hussainara Khatoon v. State of Bihar (1979), the Supreme Court ruled that the state has an obligation to provide free legal aid to the indigent accused, ensuring that justice is accessible to all, irrespective of their financial background. The court declared that free legal service is an indisputable element of a “reasonable, just and fair” procedure – making it a fundamental right, not a privilege.

Right to a speedy trial: Prolonged incarceration without trial is itself a violation of Article 21. The Supreme Court has consistently held that delays in criminal trials can lead to a miscarriage of justice. In Hussainara Khatoon, the court further held that the state cannot escape this constitutional obligation by citing administrative or financial constraints. The state is duty-bound to provide speedy trials even if it requires setting up new courts, appointing additional judges, or boosting investigative machinery.

Right to live with human dignity: In Francis Coralie Mullin v. Union Territory of Delhi (1981), the Supreme Court held that Article 21 includes the right to live with dignity, free from exploitation. This extends to the conditions in which an accused is held – ruling out torture, arbitrary handcuffing, and custodial abuse as violations of this right.

Right to compensation for violations: The Supreme Court has also interpreted Article 21 to include the right to compensation where the state unlawfully deprives a person of their liberty. If a person is wrongfully detained or subjected to custodial violence, the constitutional courts can award monetary compensation – not just as a remedy, but as a constitutional imperative.

Article 20: Safeguards against unfair prosecution 🔗

While Article 21 deals broadly with life and personal liberty, Article 20 addresses three specific protections that directly concern how a person may be prosecuted for a criminal offence. Crucially, Article 20 cannot be suspended even during a National Emergency, underscoring how fundamental these protections are considered to be.

Protection against ex post facto laws 🔗

Article 20(1) prohibits the state from convicting a person for an act that was not a crime at the time it was committed. It also prevents the imposition of a punishment greater than what was applicable when the offence occurred. This protection embodies the principle of nullum crimen sine lege – no crime without a prior law. The doctrine of ex post facto law applies only to criminal law, not to civil or tax laws. So while a government can retrospectively impose a tax, it cannot retrospectively criminalise an act and punish someone for it.

Protection against double jeopardy 🔗

Article 20(2) states that no person shall be prosecuted and punished for the same offence more than once. The Latin maxim nemo debet bis vexari – meaning no one should be troubled twice for the same cause – is the foundation of this rule. For the double jeopardy protection to apply, the person must have been both prosecuted and punished in the earlier proceeding before a court or judicial tribunal. A mere acquittal or a departmental inquiry does not attract this protection. It is worth noting that India’s protection is narrower than that under American or British law, where a second prosecution alone (without prior punishment) is sufficient to invoke the double jeopardy rule.

Protection against self-incrimination 🔗

Article 20(3) provides that no person accused of an offence shall be compelled to be a witness against themselves. This shifts the entire burden of proof onto the prosecution – the accused has no obligation to help the state build its case. The Supreme Court significantly expanded this protection in Selvi v. State of Karnataka (2010), ruling that narcoanalysis, brain mapping, and lie detector tests conducted without consent amount to testimonial compulsion and violate Article 20(3). This judgment is particularly relevant in today’s context, where forensic technologies are increasingly deployed in criminal investigations.

Article 22: Safeguards against arbitrary arrest and detention 🔗

Article 22 translates the abstract guarantee of personal liberty under Article 21 into specific, actionable rights at the moment of arrest. It operates in two distinct parts: rights available to persons arrested under ordinary criminal law, and provisions relating to preventive detention.

Under Article 22(1) and (2), an arrested person has the right to be informed of the grounds of arrest as soon as possible, the right to consult and be defended by a legal practitioner of their choice, and the right to be produced before the nearest magistrate within 24 hours. These procedural rights are aimed at ensuring transparency and guarding against arbitrary detention. The Supreme Court, in the landmark D.K. Basu v. State of West Bengal (1997), went further and issued 11 detailed guidelines for police during arrest and detention – including requirements to maintain arrest records, inform relatives, and provide for medical examination. These guidelines now form part of standard policing practice in India.

In a more recent affirmation, the Supreme Court in Pankaj Bansal v. Union of India (2023) held that a written copy of the grounds of arrest must be furnished to the arrested person as a matter of course and without exception – ensuring that the constitutional mandate is not rendered hollow by vague or oral communications.

Preventive detention and its constitutional limits 🔗

The second part of Article 22 deals with preventive detention – the power of the state to detain a person to prevent them from committing a potential offence, without a formal trial. While Article 22(4) to (7) provide some safeguards – such as a limit of three months without an advisory board review and the right to make a representation against the detention order – this power has been extensively criticised for its potential to be misused. Despite Article 22 being introduced as a safeguard, courts have often had to perform jurisprudential gymnastics to reconcile preventive detention powers with the liberal personal liberty rights under Articles 20 and 21. The tension between individual liberty and state security remains one of the most contested areas of Indian constitutional law.

The Supreme Court as the guardian of constitutional mandates 🔗

What makes India’s constitutional framework genuinely powerful is the Supreme Court’s willingness to give life to these provisions through expansive and purposive interpretation. The court has not merely declared rights in the abstract – it has enforced them with concrete remedies. Compensation for custodial deaths, free legal aid for under-trial prisoners, directives to states to reduce pendency, and the declaration that narcoanalysis violates fundamental rights are all examples of the court treating constitutional mandates as enforceable obligations, not mere aspirations.

The journey from the narrow reading of Article 21 in A.K. Gopalan (1950) to the sweeping declaration in K.S. Puttaswamy (2017) that privacy is a fundamental right is a testament to how constitutional law evolves with society. The criminal justice system, at its best, is not just a mechanism for punishing wrongdoing – it is a system constrained and shaped by constitutional values that protect every individual, including the accused, from the arbitrary exercise of state power.

What do you think? Given that Articles 20, 21, and 22 together provide extensive protections to accused persons, do you think the criminal justice system in India adequately enforces these constitutional guarantees in practice – especially for those who cannot afford legal representation? And with emerging investigative technologies like AI-based profiling and digital surveillance, how should the courts interpret Article 21’s privacy protection in the context of criminal investigations?

References

1. https://socialwork.institute/criminal-justice/upholding-justice-constitutional-mandates-criminal-jurisprudence/
2. https://ledroitindia.in/speedy-trial-in-india-legal-framework/
3. https://lawbhoomi.com/article-21-of-constitution-of-india/
4. https://www.gktoday.in/article-20/
5. https://www.thelawadvice.com/articles/rights-in-respect-of-conviction-for-offences-under-article-20-of-constitution
6. https://compass.rauias.com/polity/article-20/
7. https://www.gktoday.in/article-22/
8. https://www.drishtijudiciary.com/editorial/article-22-1-of-constitution-of-india
9. https://p39ablog.com/2021/07/the-constitution-and-the-criminal-justice-systems-of-india/