Book excerpt: Why did reasonable demands of Ethiopian masses for change lead not only to the overthrow of Emperor Haile Selassie, but also to a radical revolution that caused civil wars, economic decline, secession, and ethnic politics, all in the name of socialist equality and freedom? The answer of the book is that elite conflicts over scarce resources promoted mutually exclusive struggles for power, and so mobilized ideologies suitable for zero sum politics, of which radical revolutions are typical expressions.