What is Cultural Marxism and why is it so bad?

I know this is not economics but I think culture is very important. I am trying to find praxeological studies about culture and how statism influences culture. Hans Hermann Hoppe has things to say about it but what he has is vey limited.

How precisely though, does this relate to your question? I’m just trying to put that into context for myself so that I can figure out what your really asking.

Hippie lifestyle, primitivism, the simple life, etc.