Stalin's terror: purges, show trials and gulag
The Murder of Kirov and the Start of the Terror
On 1 December 1934, Sergei Kirov — the popular Leningrad party boss and a potential rival to Stalin — was shot dead in his office. The assassin was a young Communist named Leonid Nikolayev. Stalin immediately used the murder to justify a sweeping crackdown on “enemies of the state.” Within days, emergency laws were passed allowing executions without proper trial. Whether Stalin ordered the killing himself has never been conclusively proved, but historians widely agree that he exploited it ruthlessly.
The assassination triggered a wave of arrests and executions in Leningrad. More broadly, it began a pattern that would culminate in the Great Terror of 1936–38, a period of political violence unprecedented even by Soviet standards. Historians estimate that approximately 750,000 people were executed during the Terror and at least a million more died in labour camps.
The Great Terror ran from approximately 1936 to 1938. Historians estimate around 750,000 executions took place during this period. It targeted party members, Red Army officers, intellectuals, ethnic minorities and ordinary citizens alike.
The Moscow Show Trials
Between 1936 and 1938 Stalin staged three major show trials that became the public face of the Terror. The defendants — including prominent Old Bolsheviks such as Zinoviev, Kamenev and Bukharin — confessed to fantastical crimes: plotting to murder Stalin, sabotaging industry, spying for Nazi Germany and Japan. The confessions were extracted through months of psychological pressure, sleep deprivation and threats to defendants' families.
The first trial in August 1936 resulted in the execution of Zinoviev and Kamenev. The second trial in January 1937 saw a further group of party officials executed. The third trial in March 1938 included Nikolai Bukharin, whom Lenin had described in his Testament as “the favourite of the whole Party” and the party’s “most valuable and biggest theoretician.” Bukharin was found guilty and shot. International observers present at the trials were often shocked by the defendants' apparent willingness to confess; only later was the full picture of coercion understood.
The confessions were not freely given. The NKVD (secret police) used prolonged interrogation, physical abuse, sleep deprivation and threats against family members. Some defendants also confessed out of a twisted sense of party loyalty — believing that a public confession, however false, might serve the party's interests. Bukharin's confession at his 1938 trial was particularly complex: he confessed in general terms while subtly denying specific charges, a strategy documented in his private correspondence and later analysed by historians.
The NKVD was headed from 1936 to 1938 by Nikolai Yezhov, whose name gave the Terror its Russian nickname: the Yezhovshchina (Yezhov era). Yezhov was himself arrested in 1938 and executed in 1940 — an ironic victim of the system he had overseen. In Stalinist photographs, he was later erased entirely, replaced by empty background.
The Purge of the Red Army
One of the most strategically damaging aspects of the Terror was the purge of the Red Army. Between 1937 and 1938, Stalin had approximately three of the five Soviet marshals, 13 of 15 army commanders, and a very large proportion of senior officers arrested and shot or imprisoned. The exact figures remain disputed by historians, but the scale of the devastation to military leadership was enormous.
This purge left the Red Army without experienced commanders at precisely the moment when war with Nazi Germany was becoming increasingly likely. When Germany invaded in June 1941, many Soviet military failures in the early weeks were at least partly attributed to the destruction of the officer corps in the Terror.
The purge of the Red Army between 1937–38 removed a large proportion of its senior commanders. This severely weakened Soviet military capability at a critical time, contributing to the disasters of 1941 when Germany invaded.
The Gulag System
Alongside executions, millions of Soviet citizens were sentenced to the gulag — a vast network of forced labour camps spread across the Soviet Union, particularly in Siberia and the Far North. By 1938 the gulag population may have numbered over one and a half million prisoners, though estimates vary. Conditions were brutal: prisoners worked in freezing temperatures mining gold, felling timber or digging canals, with minimal food and clothing.
The gulag became one of the most powerful symbols of Stalinist repression. The writer Alexander Solzhenitsyn, who spent years in the camps, later wrote the most famous accounts of gulag life. His One Day in the Life of Ivan Denisovich, published in 1962 during the brief Khrushchev Thaw, was the first Soviet-published account to describe camp conditions openly.
The Terror was not confined to party elites. Mass operations targeted ethnic minorities (particularly Poles, Germans and Koreans living inside the USSR), factory managers, engineers, academics and ordinary workers denounced by neighbours or colleagues. The culture of denunciation spread fear throughout Soviet society — people were afraid to write letters, speak freely or associate with those who had been arrested.
Fear was, in part, the point. A terrorised population was easier to control. At the same time, the Terror destroyed exactly the kinds of skilled, experienced and independently minded people that the Soviet economy and military most needed. Historians debate how far this was a calculated strategy by Stalin or a system that grew beyond any individual's control.