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Those identified as " revisionists " have criticized " orthodox " Marxism and particularly its founder Karl Marx , for having disregarded Marx 's view of the necessity of evolution of capitalism to achieve socialism by replacing it with an " either/or " dynamic between capitalism and socialism ; for disregarding Marx 's emphasis on the role of parliamentary democracy in achieving socialism ; as well as criticizing Karl Kautsky for his idea of state socialism .
 person: Karl Marx; person: Marx; person: Marx; person: Karl Kautsky
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Karl Marx; person: Marx; person: Marx; person: Karl Kautsky