Soviet agricultural policy under War Communism was motivated both by practical and ideological considerations. Grain requisitioning became a necessity to feed the cities when the old system of distribution broke down. The persecution of the Kulak and other members of what Lenin called the "petty-bourgeoisie" was called for in State and Revolution. The Bolsheviks attempted to ground their grain requisitioning in theory by taking the surplus generated by the Kulaks, but in reality the definition of Kulak became so stretched as to be virtually meaningless and requisitioning committees often ignored distinctions between rich and poor peasants anyway.
Both more cogent and more dull than the literature on LSD would lead one to expect.