People of the Revolution and the USSR

Comintern Left critics of Bolshevism 1885–1939 ✕ Killed in prison

The polemicist who survived trial only to die in prison

"Do you know the difference between Stalin and Moses? Moses led the Jews out of Egypt, but Comrade Stalin led them out of the Politburo." — Radek to Boris Bazhanov, after Trotsky and Zinoviev were expelled from the Politburo.

A Polish-born Jewish journalist and diplomat who moved between the international social-democratic and communist movements. A close associate of Lenin, he participated in the Brest-Litovsk negotiations and the founding of the Comintern, serving on the Bolshevik Central Committee and as Comintern secretary. Renowned for his sharp polemics and biting wit, he led the Left Opposition before recanting publicly in 1930 and rejoining the Party. During the Great Purge he became the central defendant at the Second Moscow Trial, delivering theatrical confessions that earned him a 10-year sentence; in 1939 he was killed in prison on Stalin's orders.

Soviet Communist Party and Bolsheviks Left critics of Bolshevism 1891–1938 ✕ Executed

The Kosior brother who died in Vorkuta as an oppositionist while his brother ruled Ukraine for Stalin

After signing the Declaration of 46 in 1923 he spent fifteen years as an oppositionist, through expulsion, exile, a political isolator, and a camp, until he was shot.

Born in Węgrów in Poland, he joined the RSDLP in 1906. He was the brother of Stanislav Kosior, and while his brother rose to the Politburo and the leadership of the Ukrainian party, he took the road of the oppositions. He was an instructor for the Moscow metalworkers union in 1919, a member of the Revolutionary Military Council of the 12th Army and deputy head of the political department of the 14th Army in 1920, chairman of the All-Ukrainian Council of Trade Unions from 1920 to 1922, and chief editor of the trade-union paper Trud from 1922 to 1924. He belonged to the Democratic Centralist group in 1921, signed the Declaration of 46 in 1923, and worked with the Left Opposition thereafter. Expelled in May 1928, he was exiled to Pokrovsk in the Volga German ASSR, and because he kept up the work in exile he was given three years in a political isolator and then five years of exile in Minusinsk. In July 1936 he was sentenced to five years in the camps and held at Ukhta-Pechlag, was arrested again in December 1937, and was shot at Vorkuta on 30 March 1938.