The Bourgeoisie group exploits the working class by taking more of the value of the work of laborers than they repay in wages.
The Bourgeoisie is a social order known as the middle class. An example of the bourgeoisie is the middle class wanting to purchase high priced items out of their budget. They also want to make sure those in the classes below them are working significantly harder than they should and not being compensated for it.
