"Though self-definition is the necessary starting point for any liberation movement, it can take us only so far. The most obvious drawback of identity politics is its logic of fragmentation into ever smaller and more particularist groups: the fracturing of the radical feminist movement along class and gay-straight lines (the racial divide having kept most black women out of the movement to begin with) is the sobering paradigm. What's at stake here, however, is not only the pragmatic question (crucial as it is) of how to avoid being divided and conquered, but our understanding of what it means to be a principled radical...Almost from the beginning, second wave feminism was a study in the limits of the identity politics it did so much to promote."
January 1, 1970
https://en.wikiquote.org/wiki/Identity_politics