This paragraph from a piece at Taki’s Magazine explains a lot: the challenges of human nature, the persistence of dissatisfaction, and why the cries of injustice from the Left will never stop:

There is no possible perfection on earth because Man creates ever new dissatisfactions for himself. His desires are contradictory: He wants peace and excitement, stasis and novelty, freedom and limits, appetite and its satisfaction, his cake and to eat it. The total number of satisfactions can therefore increase without a decrease in the amount of dissatisfaction. That is why the process of reform will never be done. No sooner is one alleged injustice, unfairness, or obstacle to contentment removed, than another is found equal to the last, especially where there is no religious belief and no real struggle for existence. I fully expect by the end of my life to see a struggle for the legalization of polygamy, polyandry, incest, and necrophilia, for all the “rational” arguments are in favor of them, and after all it is the struggle, not the result, that counts.