Which Marxist art theoretician best enunciated a cogent synthesis of art and soc

Question:

Which Marxist art theoretician best enunciated a cogent synthesis of art and socialist thought?

The range of Marxist theoreticians who have tackled the subject of art runs from William Morris's 19th century perspectives on the idea of beautiful, public art, accessible to all, to the sterile conformist hard line introduced by A.A. Zhdanov in Stalinist Russia, and, at the most extreme end of things, Jiang Qing's Great Proletarian Cultural Revolution in China. With such differences of extremity, it is challenging to find an attractively moderate socialist stance on art that can fit into today's modern world. Still, I invite everyone to give their opinions and reasons for them.

My personal favourite is Ernst Fischer. I like always to link Marxism and Humanism, and I see no contradiction in Art keeping company with the two. From Fischer:

"Art is necessary in order that man
should be able to recognize
and change the world.
But art is also necessary
by virtue of the magic inherent in it."

-from "The Necessity Of Art"

Your thoughts, please?

Additional Details

1 week ago
Please don't everyone be disappointed that this isn't my usual air-headed question. I'm truly not as shallow as I appear!

1 week ago
To Ognyen:

The question was not to discuss validity of art theory, but to give input about which of the Marxist theoreticians best presented their case.

To be dismissive about a question is not only not answering it, but is indicative that you cannot answer it.

Best Answer - Chosen by Asker: 1 week ago
Please don't everyone be disappointed that this isn't my usual air-headed question. I'm truly not as shallow as I appear!