On June 14, 1941, the Soviet Union forcibly deported over 10,000 Estonian residents to Siberia, a historical event now observed as a national day of mourning in Estonia. The deportations disproportionately targeted vulnerable populations, including over 7,000 women, children, and the elderly. This action followed the Soviet occupation of Estonia in the summer of 1940, a consequence of the Molotov-Ribbentrop Pact with Nazi Germany. The mass deportations represent a particularly dark period in Estonian history, previously only known through historical accounts. Estonia suffered significant population loss – approximately 17.5% – as a result of World War II and Soviet policies. The deportations impacted people of all nationalities residing within Estonia, leaving a lasting legacy of trauma and loss.