The structure of the ideologies of Lenin and Hitler were nearly identical. Each conceived of the nation or society in biological terms—as an organism containing a parasite that was consuming or "sucking the blood of the people."

The continued presence of the deadly parasitic organism within the body politic would lead to its destruction and death unless removed.

Adolf Hitler: “The Jew was only and always a parasite in the body of other peoples. The Jews are a people under whose parasitism the whole of honest humanity is suffering.” In Mein Kampf

Vladimir Lenin: “The bureaucracy is a parasite on the body of society which ‘chokes’ all its vital pores. The state is a parasitic organism.” In
The State and Revolution: The Marxist Theory of the State and the Tasks of the Proletariat in the Revolution 

Adolf Hitler: “The spider was slowly beginning to suck the blood out of the peoples' pores. The Jew is a true blood sucker that attaches himself to the body of the unhappy people.” In Mein Kampf

Vladimir Lenin: “These leaches (the Kulaks) have sucked the blood of the working people. These spiders have grown fat at the expense of peasants.” In Comrade Workers, Forward to The Last, Decisive Fight