The media includes our schooling and is a major means of socializing people. It has been used and abused by all manner of people with every agenda but along with the Internet it is far superior to the pulpit which once was supreme.
In short there is no area of society which is not engineered by policy makers and priesthoods of all warp and woof.
The idea that Marx was trying to upend society of the kind we have had since he wrote his book with Engels - is hard to fathom. The ideas he wrote were a major part of what has freed society from the prior Dark Ages. The use of egalitarian models of government he was in favor of has been influential in freeing women. There is a branch of feminism which looks at how capitalism has enforced inequities on women. Personally I think capitalism is not so much to blame for being aware of various demographics and religious impediments to real equality. Yes, businesses are our most democratic institutions in my opinion.
People who are equating Marxism with Machiavellian agendas or some Hobbesian appeals to all demographics are mistaking cause and effect as I see it. It is more properly described as an Hegelian Dialectic or "playing both ends AGAINST THE MIDDLE".
It does happen and social engineers will use any and all means to get where they think we should be going. Francis Fukayama's The End of History and The Last Man which lead to Bill Clinton thanking him as he moved up the ladder from US Policy maker to the Rand Corporation is a must read.
The link which follows is well thought out but offensive (I could say intentionally) and miserly in references, IMHO.