The proletariat is the class of workers who do not own any means of production and therefore sell their labor to live. They are a fundamental group in Marxist theory, which predicts their rise against capitalism due to exploitation and inequality.
The class that owns the means of production in capitalist societies, often employing or exploiting the proletariat for profit.
Class struggle: The conflict of interests between the workers and the owning classes in a capitalist society, often leading to political and social change