During May 31–June 2, 1953 workers in the city of Plzeň, Czechoslovakia revolted in violent protest against currency reform and the politics of the Communist Party of Czechoslovakia. The estimated number of casualties is around 220 injured, no-one was killed.
After the communist party took over power in 1948 it started to concentrate production on heavy industry, especially in armament production. The agricultural sector was forcibly collectivised. These policies led to shortages of customer goods, especially food, accompanied by inflation (28%). The government's reaction was to increase the prices of state-supplied goods at the start of 1953. This led to growing disaffection among people, and to short-lived strikes.
The next step to be implemented was a currency reform—which amounted to a devaluation of savings. All savings were devalued in the ratio of 50:1, all salaries in the ratio of 5:1 (small groups of people were exempted). All obligations of the state were abolished. Rationing of food at subsidized prices was stopped and work quotas increased. The reform was announced on May 31, 1953, at 22:00, after months of rumors and denials by state representatives.