The genocide of the Ingrian Finns (Inkeriläisten kansanmurha) was a series of events triggered by the Russian Revolution in the 20th century, in which the Soviet Union deported, imprisoned and killed Ingrians and destroyed their culture. In the process, Ingria, in the historical sense of the word, ceased to exist. Before the persecution there were 140,000 to 160,000 Ingrians in Russia and today approximately 19,000 (after several thousands repatriated since 1990). From 1935 onwards, the genocide manifested itself in deportations of entire Ingrian villages, mass arrests and executions, especially in 1937 and 1938 associated with the Great Purge. The reason for the genocide was the skeptical attitude of the Soviet Union towards the Ingrian people due to their close cultural and historical relations with Finland. At the same time, many other ethnic groups and minorities were also persecuted. The destruction process targeted at Ingrian Finns was centrally managed and considered. Russian legislation in the 1990s refers to it as genocide. The aim was, in particular, to assassinate the male population. Tens of thousands of Ingrians died due to deportations and in labor camps. The Ingrian Finns were mainly independent small farmers in the 1920s and still in the early 1930s with relatively high literacy. They were predominantly Lutheran. Ingria was located in the vicinity of Leningrad, where they formed the second largest ethnic group after Russians in the 1930s. Ingrians were targeted from 1930 onwards. Red refugees who lost the Finnish Civil War took charge in the area. They forced propaganda for collectivization of the agriculture, reported the priests, helped arrest people and harassed Ingrian Finns and "Kulaks". In addition to independent farmers, the Soviet regime attacked educated people, such as teachers, as well as religious leadership throughout the Soviet Union. Ingrian Lutheran Church workers were imprisoned, sent to forced labor, deported, and executed. Ingrian churches were converted into clubs and warehouses.