From wiki:
Djilas was widely regarded as Tito's possible successor and in 1953 he was about to be chosen as President of Yugoslavia. He became President of the Federal People's Assembly of Yugoslavia, but he only held office from 25 December 1953 to 16 January 1954. Between October 1953 and January 1954, he wrote 19 articles (only 18 were published) for Borba, the official newspaper of the League of Communists of Yugoslavia, wherein, encouraged by Tito, he developed the Yugoslav critique of over-bureaucratic Stalinism in the Soviet Union, in favour of a shift away from central planning towards more economic autonomy.
His advocacy of greater democratic input into decision-making led him eventually to argue against the one-party state itself, suggesting a relaxation of party discipline, and the retirement of the state officials he saw as profiteering from their position and blocking the road to further reform.[21] At that point, Tito and other leading Yugoslav communists saw Djilas' arguments as a threat to their leadership.[22] In January 1954. Djilas was expelled from the Central Committee of the party, of which he had been a member since 1937, and dismissed from all political functions for his criticism.
From chapter 3:
>Everything happened differently in the U.S.S.R. and other Communist countries from what the leaders–even such prominent ones as Lenin, Stalin, Trotsky, and Bukharin–anticipated. They expected that the state would rapidly wither away, that democracy would be strengthened. The reverse happened. They expected a rapid improvement in the standard of living–there has been scarcely any change in this respect and, in the subjugated East European countries, the standard has even declined. In every instances, the standard of living has failed to rise in proportion to the rate of industrialization, which was much more rapid. It was believed that the differences between cities and villages, between intellectual and physical labor, would slowly disappear; instead these differences have increased… >The once live, compact party, full of initiative, is disappearing to become transformed into the traditional oligarchy of the new class, irresistibly drawing into its ranks those who aspire to join the new class and repressing those who have any ideals. >Discrepancies between the pay of workers and party functionaries are extreme…Post too long. Click here to view the full text.