Identarianism began as an ethnonationalism, identifying as a particular ethnic group and defining politics (and action) on the drive for greater power to the ethnic group, excluding or persecuting others by the otherness of their ethnicity e.g. by race or by culture etc.
In the past 20-30 years, identity politics has been defined by trying to address experiences of injustice shared by different, often excluded social groups. In this context, identity politics aims to reclaim greater self-determination and political freedom for marginalized peoples through understanding particular paradigms and lifestyle factors, and challenging externally imposed characterizations and limitations.
IDENTARIAN TO IDENTITY POLITICS
Identarians use identity politics as the driving force behind their political and social activities. Identity is used "as a tool to frame political claims, promote political ideologies, or stimulate and orient social and political action, usually in a larger context of inequality or injustice and with the aim of asserting group distinctiveness and belonging and gaining power and recognition."
IDENTITY POLITICS TO INTERSECTIONALITY
Contemporary applications of identity politics describe peoples of a specific race, ethnicity, sex, gender identity, sexual orientation, age, economic class, disability status, education, religion, language, profession, political party, veteran status, and geographic location. These identity labels are not mutually exclusive but are, in many cases, compounded into one when describing hyper-specific groups. The doctrine of specific identitarianism is intersectionality e.g. African-American, homosexual women constitutes a particular hyper-specific identity class. Typically intersectionality forms a hierarchy based on perceived oppression, with the most oppressed at the top and the least at the bottom. Individual circumstances are disregarded.