Once the vanguard seizes power and becomes the dictatorship of the proletariat they will naturally act to preserve their own power, preventing the withering away of the state necessary for higher-stage communism. The duty of anarchists, since their end goal is the same higher-stage communism, is therefore to form a new vanguard with goal of ending the dictatorship of the proletariat.
From this it follows that the duty of Marxist-Leninists is to defend and protect anarchists and anarchist thought as the seeds of the utopia they are preparing.
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