#Identitypolitics, like #nationalism, is ultimately nefarious due to the biology of cognition. #Neuroscience tells us action and perception are intertwined and epistemically-driven--to reduce prediction-error and increase confidence in our hypotheses of how the World behaves. This can result in mutually misleading cycles, whereby running hypotheses seek self-validation by selecting appropriate cues (cf Andy Clark ). Our epistemic models of people behavior based on their identity are then very prone to misleading self-validation. All of this is only enhanced by AIs that feed those very hypotheses in our human-social-machine interactions. That is the nature of bias.