From the beginning of their regime, the Bolsheviks relied on a strong secret, or political, police to buttress their rule. The first secret police, called the Cheka, was established in December 1917 as a temporary institution to be abolished once Vladimir Lenin and the Bolsheviks had consolidated their power. The original Cheka, headed by Feliks Dzerzhinskii, was empowered only to investigate "counterrevolutionary" crimes. But it soon acquired powers of summary justice and began a campaign of terror against the propertied classes and enemies of Bolshevism. Although many Bolsheviks viewed the Cheka with repugnance and spoke out against its excesses, its continued existence was seen as crucial to the survival of the new regime.
Once the Civil War (1918-21) ended and the threat of domestic and foreign opposition had receded, the Cheka was disbanded. Its functions were transferred in 1922 to the State Political Directorate, or GPU, which was initially less powerful than its predecessor. Repression against the population lessened. But under party leader Joseph Stalin, the secret police again acquired vast punitive powers and in 1934 was renamed the People's Comissariat for Internal Affairs, or NKVD. No longer subject to party control or restricted by law, the NKVD became a direct instrument of Stalin for use against the party and the country during the Great Terror of the 1930s.
The secret police remained the most powerful and feared Soviet institution throughout the Stalinist period. Although the post-Stalin secret police, the KGB, no longer inflicted such large-scale purges, terror, and forced depopulation on the peoples of the Soviet Union, it continued to be used by theKremlin leadership to suppress political and religious dissent. The head of the KGB was a key figure in resisting the democratization of the late 1980s and in organizing the attempted putsch of August 1991.
Please follow the guided tour or have a look at one of these showcases: