He was deported from Russia and briefly resumed his publishing activities in exile, but in 1925, he was permitted to return to the Soviet Union, where he was executed during the Great Purge.
[2] During the October Revolution, Yarchuk led the Kronstadt sailors in the storming of the Winter Palace, hoping that the overthrow of the Russian bourgeoisie would eventually lead towards anarchy.
[2] He later returned to Petrograd as a delegate to the Third All-Russian Congress of Workers', Soldiers' and Peasants Deputies' Soviets,[2] following which he continued his work with Golos Truda,[1][2][4] which was soon suppressed by the new Bolshevik-led government.
In August 1918, he participated in the First All-Russian Conference of Anarcho-Syndicalists,[1][4] which established a new newspaper, Volnyi Golos Truda, with Yarchuk joining its editorial board.
[1][2][4] The new paper represented the far-left of the Russian anarcho-syndicalist movement, which advocated a militant form of syndicalism inspired by Mikhail Bakunin.
[6] Following the conclusion of the siege of Perekop in November 1920, the Bolsheviks launched a crackdown on the anarchist movement,[7] during which Yarchuk was again arrested by the Cheka and detained for a number of weeks.
[10][1] In June 1921, while the founding congress of the Profintern was being held in Moscow, Yarchuk and the other imprisoned anarchists went on hunger strike, to attract the attention of visiting syndicalist delegates.