From Christopher Hitchens:
I’ll mention one other gleaning from my voyages. Beware of identity politics. I’ll rephrase that: have nothing to do with identity politics. I remember very well the first time I heard the saying “The Personal is Political.” It began as a sort of reaction to the defeats and downturns that followed 1968: a consolation prize, you might say, for people who had missed that year. I know in my bones that a truly Bad Idea had entered the discourse. Nor was I wrong. People began to stand up at meetings and orate about how they felt, not what or how they thought, and about who they were rather than what (if anything) they had done or stood for. It became the replication in even less interesting form of the narcissism of the small difference, because each identity group begat its sub-groups and “specificities. This tendency has often been satirized – the overweight caucus of the Cherokee transgender disabled lesbian faction demands a hearing on its needs – but never satirized enough. You have to have seen it really happen. From a way of being radical it very swiftly became a way of being reactionary; the Clarence Thomas hearings demonstrated this to all but the most dense and boring and selfish, but then, it was the dense and boring and selfish who had always seen identity politics as their big chance.
Letters to a Young Contrarian, pp. 112-113