Even after 75 years of independence, India witnesses the increasing violence unleashed by the upper caste families against the individuals for inter-caste love or marriage. The objective of this article is to critically engage with the operational aspects of Michel Foucault’s biopolitics of caste system in enforcing endogamy in the marital relationship between two individuals. Caste as a social institution governs every aspect of Dalit’s life, ranging from cradle to graveyard. As such, the increasing incidents of (dis)honour killings, from South India, reflect the idea of endogamy, with the ulterior motto of controlling the sexuality of the Dalits and women, thereby ensuring the purity of the caste Hindu society. Thus, the patriarchy is an inseparable element of caste system in controlling the freedom of women in choosing her partner and it is prevalent in sub-castes of Dalit folds also. The question of discrimination and practice of endogamy within Dalit communities should be addressed in marching towards annihilation of the caste.