The judiciary plays a crucial role in India's polity. Here are some key points to consider:

• Interpretation of Constitution: The judiciary interprets the Constitution and ensures that laws passed by the legislature do not violate the Constitution.
• Judicial Review: The Indian judiciary has the power of judicial review, which means it can strike down any law or executive action that goes against the Constitution. This ensures that the government does not overstep its bounds and ensures accountability of the executive branch.
• Protection of Fundamental Rights: The judiciary protects the fundamental rights of citizens. It can take suo moto cognizance of violations of these rights and initiate action against the offenders.
• Independent Judiciary: The Indian judiciary is independent of the executive and legislative branches. This ensures that it can act impartially and without any influence from these branches of government.
• Public interest litigation: The concept of Public Interest Litigation (PIL) has been developed by the Indian judiciary to promote the rights of the marginalized and the weaker sections of society.

The role of the judiciary in India's polity is thus crucial in ensuring that the democratic system of the country is maintained.