a economic theory relating to the origin of capital (Adam Smith saw it as a peaceful process with natural imbalances in wealth distribution; Karl Marx saw it as a violent enclosure of the commons etc etc)
Marx's account of so-called 'primitive accumulation' may be overdramatised and oversimpified but its essential truth is undeniable. Somehow or other the mass of a population has been put in a position of having to work for capital in order to live.