Answer: After leaving school, Stalin became an underground political agitator, taking part in labor demonstrations and strikes. He adopted the name Koba, after a fictional Georgian outlaw-hero, and joined the more militant wing of the Marxist Social Democratic movement, the Bolsheviks, led by Vladimir Lenin. Stalin also became involved in various criminal activities, including bank heists, the proceeds from which were used to help fund the Bolshevik Party. He was arrested multiple times between 1902 and 1913, and subjected to imprisonment and exile in Siberia.
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