Martial law in Poland refers to the temporary military rule imposed by the government in December 1981 to suppress dissent and control social unrest, particularly against the Solidarity movement. This significant action was taken in response to widespread strikes and protests, which had been escalating since the summer of 1980 as workers sought greater rights and political freedoms. The declaration of martial law led to the suspension of civil liberties and the arrest of many activists, fundamentally impacting the trajectory of opposition movements in the country.