I have never once seen a thread in Daily Kos advocating applying dialectical materialism to current affairs, debating whether the peasantry serves a reactionary or revolutionary role, or calling a critic a "petit-bourgeois reactionary." Call it what you want, but it's far more entertaining than a communist site would be...communists being the driest, most literal-minded, humorless people on Earth.
Communists are very humorous. Haven't you ever read
Pravda?
And I doubt most people here have any understanding about Marxism, which is an anarchist ideology.