"Identity politics" is nothing more than a new term for the way we've always done things. Like how even the ancient Greeks and Romans who emphasised the identities revolving around free citizen/men, slaves, women, laborers, and others. India's rigid caste system is highly identity-driven. And all our tribal ancestors identified strongly with their tribe with a great deal of them would have been hostile towards the members of other tribes. Amd there have probably been none more attached to identity politics than lords, nobles, chieftains and kings of old (and today) who identify their legitimacy and descent from a god.