That is not a definition. What is the philosophical framework? What is critically analyzed by those theories? What is "clear"? Where are all the bad bad Marxists hiding?
In my experience, y'know, as a Marxist, all Hollywood has ever pumped out is pro-capitalist propaganda. To say there's any Marxism in it is downright insulting.
I believe that Marxism has become an abstract target for conservatives to project their grievances on.
https://en.wikipedia.org/wiki/Neo-Marxism
That answers your sibling reply as well, as it’s clear where such “critical theories” and grievance narratives have entered movies and games.