Katyn — Russia
Andrzej Wajda's film depicts the Soviet massacre of 22,000 Polish officers in the Katyn Forest — and the agonising wait of their families who were told for decades to blame Germany.
In April-May 1940, the NKVD executed approximately 22,000 Polish prisoners of war and intellectuals at Katyn and other sites. The Soviets blamed Germany until 1990, when Gorbachev officially acknowledged Soviet responsibility. Wajda's own father, Captain Jakub Wajda, was among those killed. The film was Poland's Oscar submission for Best Foreign Film in 2008.