The Blackshirts under Mussolini and the Bolsheviks led by Lenin were significant military and political groups during the rise of fascism and communism.
Blackshirts were the fascist military wing under the leadership of Benito Mussolini, while the Bolsheviks were a communist group led by Vladimir Lenin. Mussolini's black-shirted squadristi engaged in violent activities to suppress political opponents, similar to how the Bolsheviks operated during the Russian Civil War.
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