From Wikipedia, the free encyclopedia

The proletariat (/ˌprlɪˈtɛəriət/ from Latin proletarius "producing offspring") is the class of wage-earners in an economic society whose only possession of significant material value is their labour-power (how much work they can do). A member of such a class is a proletarian.
Marxist theory considers the proletariat to be oppressed by capitalism and the wage system. This oppression gives the proletariat common economic and political interests that transcend national boundaries. These common interests put the proletariat in a position to unite and take power away from the capitalist class, in order to create a communist society free from class distinctions.

Proletarii in Ancient Rome