Mass operations of the NKVD
| Mass repression in the Soviet Union | 
|---|
| Economic repression | 
| Political repression | 
| Ideological repression | 
| Ethnic repression | 
Mass operations of the People's Comissariate of Internal Affairs (NKVD) were carried out during the Great Purge and targeted specific categories of people. As a rule, they were carried out according to the corresponding order of the People's Commissar of Internal Affairs Nikolai Yezhov.