The purpose of the inclusion of Directive Principles of State Policy in the Indian Constitution is to establish social and economic democracy.

The Directive Principles of State Policy (DPSP) are a set of guidelines or principles given to the government of India to establish a social and economic framework for the country. These principles, outlined in Part IV of the Indian Constitution, provide directions to the state to promote the welfare of the people, secure social justice, and ensure the overall development of society.

While political democracy is established through the fundamental rights and provisions in the Constitution, the Directive Principles aim to establish social and economic democracy by addressing issues related to social justice, equal distribution of resources, elimination of poverty and inequality, and upliftment of marginalized sections of society.

The principles reflect the vision of the framers of the Constitution to create a just and equitable society. They draw inspiration from various sources, including the socio-economic philosophy of Mahatma Gandhi, and aim to guide the government in formulating policies and laws to achieve social and economic justice.

Therefore, the purpose of including Directive Principles of State Policy in the Indian Constitution is to establish social and economic democracy, ensuring the well-being and development of all sections of society.