What were the police force called that Stalin used?

Stalin used the NKVD (People's Commissariat for Internal Affairs) as his primary police force. This organization was responsible for state security, law enforcement, and the administration of the Gulag labor camps. The NKVD played a crucial role in the Great Purge, where it conducted mass arrests, executions, and deportations of perceived political enemies. Its operations were marked by brutality and widespread repression.