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" Left-Wing " Communism : An Infantile Disorder ( Russian : Детская болезнь " левизны " в коммунизме ; Transliteration : Detskaya Bolezn ' " Levizny " v Kommunizme ) is a work by Lenin attacking assorted critics of the Bolsheviks who claimed positions to their left .
 Lenin, Bolsheviks
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Lenin, Bolsheviks