Поалей Цион
Borochov caught pneumonia while on a speaking tour and died in Kiev on 17 December 1917, at the age of 36. The Russian Poale Zion movement split into two factions over attitudes towards the Bolshevik Revolution of October 1917. The Poale Zion Left formed a "Borochov Brigade" to join the Red Army during the Russian Civil War and ultimately split from the main Poale Zion party to become the Jewish Communist Party (Poalei Zion) in 1919 and would go on to join the Jewish section (Yevsektsiya) of the Communist Party of the Soviet Union while the social democratic Right Poale Zion was banned.