What is Karl Marx's romantic ideal?

That with the adoption of a political system as he described, people would become selfless the world would be a better place.

He was right, except people couldn't become selfless.

Karl Marx tought that romance was war against the proletariat. That is what he aspired to be whether he knew it or not.

equality, oddly enough, some are more equal than others we all have cream rise to the top of the milk of human kindness?

He was not romantic.