Bourgeoisie and Proletarians

Marx and Engels give a fairly compelling explanation for our current system in the first part of the Communist Manifesto. He says that “the history of all hitherto existing society is the history of class struggles,” or in other words, “oppressor vs the oppressed.” At the time, Marx said that society had split into two great hostile camps: the bourgeoisie (or the owners of the means of production) and the proletariat (or the lower social class). This stands in contrast to the way we generally view things in terms of the rich, the middle class, and the poor. But it is only a difference in degree. The point is, we all view things in terms of class, at least when we talk economics. However, do we then take the next step and translate this into oppression?