Identity Politics and Nationalism

The thoughts here were triggered by a discussion in ForeignAffairs between Stacey Abrams and Francis Fukuyama.

Fukuyama made a couple of interesting points:

The first major expression of modern identity politics was nineteenth-century European nationalism, when cultural groups began to demand recognition in the form of statehood... Even as Americans seek to right injustices suffered by specific social groups, they need to balance their small-group identities with a more integrative identity needed to create a cohesive national democratic community.

As a humanist, the disadvantages of basing government on tribal/national/ethnic identities are clear to me.  Over and above all, we are all humans and must somehow work together or perish separately.  Identity politics goes against this by definition.  Socialism is a better way to go since it, by definition, emphasizes the greater society.