Greek genocide
The Greek genocide or ethnic cleansing of Ottoman Greeks (, "Genoktonia ton Ellinon"), including the Pontic genocide, was the systematic killing of the Christian Ottoman Greek population of Anatolia which was carried out during World War I and its aftermath (1914–1922) on the basis of their religion and ethnicity. It was instigated by the government of the Ottoman Empire and the Turkish national movement against the indigenous Greek population of the Empire and included massacres, forced deportations involving death marches, expulsions, summary execution, and the destruction of Eastern Orthodox cultural, historical, and religious monuments. Several hundred thousand Ottoman Greeks died during this period. Most of the refugees and survivors fled to Greece (adding over a quarter to the prior population of Greece). Some, especially those in Eastern provinces, took refuge in the neighbouring Russian Empire.