The second one is the answer
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Families that experience unemployment and poverty over several generations are the underclass.
These are the people who occupy the lowest classes and are frequently jobless and and or in poverty - this also denotes the families in question.
Discrimination is the situation when some people are treated worse than other people based on who they are: typically it's the minorities and women that are discriminated.
An example of discrimination is when two people apply for the same job and have the same qualification but the person who is not discriminated against gets the job.
