Within Karl Marx's theory of class struggle, the bourgeoisie plays a significant role. By overthrowing the feudal system it is seen as an originally progressive force that later becomes a reactionary force as it tries to prevent the ascendency of the proletariat (wage earners) in order to maintain its own position of predominance. Some writers argue that Marx's theory fails because he did not foresee the rise of a new, expanded middle class of professionals and managers, which, although they are wage earners, do not fit easily into his definition of the proletariat.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.