June 1976 in Polish protests

The June 1976 protests were a series of protests and demonstrations in the Polish People's Republic that took place after Prime Minister Piotr Jaroszewicz revealed the plan for a sudden increase in the price of many basic commodities, particularly food (butter by 33%, meat by 70%, and sugar by 100%). Prices in Poland were at that time fixed, and controlled by the government, which was falling into increasing debt.

Source: Wikipedia — June 1976 in Polish protests (CC BY-SA 4.0)