According to Marx, what are the strengths of the proletariat?

In the theory of Karl Marx, the term proletariat designated the class of wage workers who were engaged in industrial production and whose chief source of income was derived from the sale of their labour power.

A strength of marxism is that this theory analyses power and conflict in society. It explains why there is such an uneven distribution of power and wealth between social classes.

well they should not copy somethen in the first place