Dan was a lifelong socialist activist and journalist. He was a member of the St. Petersburg
Union of Struggle for the Emancipation of the Working Class and was one of the organizers of the textile workers' strike. In 1896 he was arrested and deported for 5 years to the Vyatka province. In 1904 he wrote the first official history of the early years of the RSDLP. Dan helped Martov form the Mensheviks, returning to
Russia in 1912. He was an active member of the irregular
freemasonic lodge, the
Grand Orient of Russia's Peoples. From 1913 he worked legally in Russia. Editor of the newspaper Golos Sotsial-Demorata and was a member of the Menshevik Central Committee. In 1915 he was arrested and exiled to
Siberia. He was pardoned and mobilized as a military doctor with the outbreak of
WWI.
Russian Revolution 1917–1918 After the
February Revolution of 1917 he became an ideologist of "revolutionary
defencism". One of the most notable figures of the period, he was a member of the
Executive Committee of the
Petrograd Soviet and the Presidium of the Central Executive Committee of the 1st convocation. After the
October Revolution he worked as a doctor. At the 7th (December 1919) and 8th (December 1920) All-Russian Congresses of Soviets, he was a speaker on behalf of the Mensheviks.
Exile Dan was arrested on the order of the Soviet authorities in 1921 and after a year in prison was sent into exile on charges of being an "enemy of the people". In 1923 he participated in the creation of the
Socialist Workers' International. In the same year he was deprived of Soviet citizenship. After the death of Julius Martov in 1923, until 1940, he headed the Foreign Delegation of the Menshevik faction of the RSDLP. When the Soviet Union was attacked in 1941, Dan gave his support to the country. In his book
The Origins of Bolshevism (1943) he argued that Bolshevism was the carrier of
socialism, whilst still arguing for political liberalisation in the Soviet Union. == Personal life ==