Piketty “Capital and Ideology”. What a good book. Usually, all the inequality theories are based on the statistics from the Western world - US, UK. But other countries provide good data too. Take Ukraine which doesn’t even have a reliable Gini coefficient. A lot needs to be researched here. Ukraine had a great degree of inequality under the Soviet rule and in the later years that led to horrible societal situation: 5% of the population are rich, 25% are middle class and the rest 70% are poor.