Master & Margarita have an interesting article about jazz in the Soviet Union (USSR).
The part I liked the most:
In 1947, under influence of the Zhdanov doctrine, the Soviet propaganda started a large anti-cosmopolitanism campaign which lasted until 1952. The core message was that the Western culture degenerated. Soviet citizens had nothing to learn from the West, on the contrary, the progressive Westerners had much to learn from the Soviet people. The jazz bands were the victims of this ideology. Jazz and related music was described as bourgeois music and many bands were disbanded. Those who remained tried to avoid to be labeled as a jazz band, or joined the bards in the magnitizdat.
View the full article [here.]