A
power vacuum developed in the Communist Party, the ruling party in the
Soviet Union (USSR), after
Vladimir Lenin's
death in 1924; established figures in Lenin's government attempted to succeed him. Joseph Stalin, the party's general secretary, triumphed over his opponents by 1928 and gained control of the party. Initially, Stalin's leadership was widely accepted; Trotsky, his main political adversary, was forced into exile in 1929 and Stalin's doctrine of "
socialism in one country" became party policy. Party officials began to lose faith in his leadership in the early 1930s, however, largely due to the human cost of the
first five-year plan and the
collectivization of agriculture (including the
Holodomor famine in
Ukraine). In 1930, the party and police officials feared the "
social disorder" caused by the upheavals of
forced collectivization of peasants, the resulting
famine of 1930–1933 and the massive, uncontrolled migration of millions of peasants to cities. The threat of war heightened Stalin's (and Soviet) perception of marginal and politically-suspect populations as potential sources of an uprising during a possible invasion. Stalin began to plan for the preventive elimination of potential recruits for a mythical "
fifth column of
wreckers, terrorists and spies." The term "
purge" in Soviet political slang was an abbreviation of the expression "purge from the party ranks"; in 1933, for example, the party expelled about 400,000 people. The term changed its meaning between 1936 and 1953, and being expelled from the party came to mean almost-certain arrest, imprisonment, and (often) execution. The political purge was primarily an effort by Stalin to eliminate challenges from past and potential opposition groups, including the party's left and right wings (led by Trotsky and
Nikolai Bukharin, respectively). After the
Civil War and the late-1920s reconstruction of the Soviet economy, veteran Bolsheviks thought that the "temporary" wartime dictatorship (which had passed from Lenin to Stalin) was no longer necessary. Stalin's opponents in the Communist Party chided him as undemocratic and lax about bureaucratic corruption. Opposition to the leadership may have accumulated substantial support from the
working class by attacking the privileges and luxuries the state offered its highly-paid elite, and the
Ryutin affair seemed to vindicate Stalin's suspicions.
Martemyan Ryutin was working with a large, secret
Opposition Bloc with Trotsky and
Grigory Zinoviev, which led to their deaths. Stalin enforced a ban on party
factions and demoted party members who had opposed him, ending
democratic centralism. In the new party organization, the Politburo (and Stalin in particular) were the sole dispensers of ideology. This required the elimination of all Marxists with different views, especially the prestigious "old guard" of revolutionaries. As the purges began, the government (through the NKVD) shot Bolshevik heroes—including
Mikhail Tukhachevsky and
Béla Kun—and most of Lenin's Politburo for disagreements about policy. The NKVD attacked the supporters, friends, and family of these "heretical" Marxists, in Russia and abroad. It nearly annihilated Trotsky's family before
killing him in Mexico; NKVD agent
Ramón Mercader was part of an assassination task force assembled by special agent
Pavel Sudoplatov under Stalin's orders. party leader
Sergei Kirov with Stalin and his daughter,
Svetlana, in 1934 By 1934, several of Stalin's rivals (such as Trotsky) began calling for Stalin's removal and attempted to break his control of the party. In an atmosphere of doubt and suspicion, the popular high-ranking official
Sergei Kirov was assassinated. The NKVD initially did not want to help investigate the December 1934 assassination, Many of those arrested after Kirov's murder, high-ranking party officials among them, also admitted (often under duress) plans to kill Stalin themselves. The confessions' validity is debated by historians, but consensus exists that Kirov's death was the flashpoint when Stalin decided to take action and begin the purges. Some later historians came to believe that Stalin arranged Kirov's murder, or that sufficient evidence existed to reach such a conclusion. Kirov was a staunch Stalin loyalist, but Stalin may have viewed him as a potential rival because of his emerging popularity among moderates. The
1934 Party Congress elected Kirov to the central committee with only three opposing votes against, the fewest of any candidate; Stalin received 292 opposing votes. After Kirov's assassination, the NKVD charged the increasingly-large group of former Stalin opponents with Kirov's murder and a growing list of other offenses which included treason, terrorism, sabotage, and espionage. Another justification for the purge was to remove any possible "fifth column" in case of war.
Vyacheslav Molotov and
Lazar Kaganovich, participants in the repression as members of the Politburo, maintained this justification throughout the purge and each signed many death lists. Stalin believed that war was imminent, threatened by an explicitly-hostile Germany and an expansionist Japan. The Soviet press portrayed the USSR as threatened from within by fascist spies. During and after the
October Revolution, Lenin used repression against perceived (and legitimate) enemies of the Bolsheviks as a systematic method of instilling fear and facilitating control of the population in a campaign known as the
Red Terror. The campaign was relaxed as the Russian Civil War drew to a close, although the secret police remained active. From 1924 to 1928, mass repression—including incarceration in the Gulag system—fell significantly. Stalin had defeated his political opponents and gained full control of the party by 1929, and organized a committee to begin the process of industrializing the Soviet Union. Backlash against industrialization and the collectivization of agriculture escalated, which prompted Stalin to increase police presence in rural areas. Soviet authorities increased repression against the kulaks (wealthy peasants who owned farmland) in a policy known as
dekulakization. The kulaks responded by destroying crops and other acts of sabotage against the Soviet government. The resulting food shortage led to a mass famine across the USSR and slowed the Five Year Plan. A distinctive feature of the Great Purge was that, for the first time, members of the ruling party were included on a massive scale as victims of the repression. In addition to ordinary citizens, prominent members of the Communist Party were also targets of the purges. The purge of the party was accompanied by a purge of society. Soviet historians divide the Great Purge into three corresponding trials, and the following events are used for demarcation: • 1936: The
first Moscow trial • 1937: Introduction of
NKVD troikas for implementation of "revolutionary justice" • 1937: Passage of Article 58-14 about "counter-revolutionary sabotage" • 1937: The
second Moscow trial • 1937: The military purge • 1938: the
third Moscow trial. ==Moscow trials==