Alienation (Entfremdung) is the systemic result of living in a socially stratified society, because being a mechanistic part of a social class alienates a person from his and her humanity.
The theoretic basis of alienation within the capitalist mode of production is that the worker invariably loses the ability to determine his or her life and destiny, when deprived of the right to think (conceive) of himself as the director of his actions; to determine the character of said actions; to define his relationship with other people; and to own the things and use the value of the goods and services, produced with his labour.
Although the worker is an autonomous, self-realised human being, as an economic entity, he or she is directed to goals and diverted to activities that are dictated by the bourgeoisie, who own the means of production, in order to extract from the worker the maximal amount of surplus value, in the course of business competition among industrialists.

More pointy-headed bull****. class envy 101. people with more than me keep me from being free... thus I will turn my everything over to the state where I will have (though I think that I will) no freedom