underclass

People who are at the bottom of a society having become victims of poverty trap. This class is largely composed of the young unemployed, long-unemployed, chronically-sick, disabled, old, or single-parent (usually the mother) families. It also includes those who are systematically excluded from participation in legitimate economic activities, such as cultural, ethnic, or religious minorities or illegal immigrants. Children of the underclass (specially those from single-parent families) often lack educational qualifications and social and other skills and are, therefore, unable to rise out of it.