Marx's analysis of economic inequality focuses on the progressive tax system.

inequality such as gender inequality, economic status

Do you think economic inequality is beneficial to American society?

Social inequality affects economic inequality, or perhaps better said is how does social inequality affect the economics of a nation. Either way, in a nations practice of treating particular ethnic or racial groups unfairly results in a tendency to have these people in low paying jobs. The people who are treated as unequals allows their talents and expertise to not be used in filling jobs that would enhance a nations economics. The bottom line is the more inequality at social levels creates an unequal economic situation.