Art considered by Marxists

 Art is that part of culture micro-managed by the ruling class. The superstructure.

That tip of the societal pyramid created by the current mode of production.

World historical individuals - like Marx, Engels, Lenin and Kim Jong Un - kindly show low class people the historical line of march so that lower class societies may rise up through stages defined by economic relations and the dictatorship principle. 

This dazzling insight shows clearly why a shark in a tank, or a urinal , stand so superior to rubbish from the past like King Tuts tomb and the bourgeois Elgin yarbles.

It remains a concrete, materialist fact all workers prefer socialist realism through every period. Thank Heaven for Marxist communism!