This development in artistic expression came about when Russia was in a revolutionary state, ideas were in ferment, and the old order was being swept away. As the new order became established, and Stalinism took hold from 1924 on, the state began limiting the freedom of artists. From the late 1920s the Russian avant-garde experienced direct and harsh criticism from the authorities and in 1934 the doctrine of socialist realism became official policy, and prohibited abstraction and different artistic expression.