Complex sentence: More recently, the term has been popularized by conservative political commentators to describe the elements of Neo-Marxist critical theory that conceive of culture as central to the legitimation of oppression, in addition to the economic factors that Karl Marx emphasized.
Split into simpler sentences: More recently, the term has been popularized by conservative political commentators. Within cultural Marxist approaches, culture is seen as central to the legitimation of oppression, in addition to the economic factors that Karl Marx emphasized.