Louis Dumont, a prominent French anthropologist, is renowned for his structuralist approach to understanding Indian society, particularly through his concept of 'Homo Hierarchicus.' His deliberate stress on ideology, specifically the ideology of hierarchy and purity-pollution, was central to his intellectualized account of Indian society. This approach can be justified by understanding his theoretical framework and the specific insights it offered.

Dumont argued that Indian society, unlike Western societies, is fundamentally organized by a religious ideology that prioritizes hierarchy over equality, and holism over individualism. For him, the caste system was not merely a social stratification but a comprehensive ideological system rooted in the opposition of the pure and the impure. This ideology, he contended, permeated all aspects of Indian life, from social relations to economic activities and political structures.

Justification for Dumont's stress on ideology:

1. Emic Perspective: Dumont sought to understand Indian society from an 'emic' (insider's) perspective, believing that to truly grasp its essence, one must understand the categories and values that its members themselves use. He argued that Indians primarily understood their social world through the lens of dharma, karma, and the purity-pollution dichotomy, which are fundamentally ideological constructs.

2. Holistic Understanding: By focusing on ideology, Dumont aimed to provide a holistic understanding of Indian society, where various institutions (caste, family, religion, politics) are seen as integrated parts of a larger ideological system. He believed that reducing caste to mere economic or political stratification, as many Western scholars did, missed its fundamental ideological and religious underpinnings.

3. Distinction from Western Societies: Dumont's work was also an attempt to highlight the fundamental difference between traditional Indian society and modern Western societies. He posited that while Western societies are characterized by the ideology of individualism and equality ('Homo Aequalis'), Indian society is defined by the ideology of hierarchy and holism ('Homo Hierarchicus'). This distinction, he argued, was crucial for avoiding ethnocentric interpretations.

4. Explanatory Power: For Dumont, the ideology of purity and pollution provided a powerful explanatory framework for understanding the persistence and resilience of the caste system, the nature of social interactions, and even the historical trajectory of Indian civilization. He argued that this ideology subsumed and encompassed other aspects like economic and political power, making them secondary to ritual status.

5. Critique of Reductionism: Dumont's emphasis on ideology was a critique of reductionist approaches that sought to explain Indian social structures solely through material or power-based analyses. He believed that such approaches failed to capture the unique cultural logic and internal coherence of Indian social organization.

While Dumont's approach has been criticized for overemphasizing ideology at the expense of material realities, power dynamics, and historical change, and for presenting a somewhat static and idealized view of the caste system, his deliberate stress on ideology was a conscious methodological choice. It allowed him to construct a coherent and intellectually rigorous model that highlighted the unique cultural logic of Indian social organization, offering a profound challenge to universalistic sociological theories and prompting a deeper engagement with indigenous categories of thought.