Stratification

In sociology, social stratification is a concept involving the "classification of people into groups based on shared socio-economic conditions, a relational set of inequalities with economic, social, political and ideological dimensions." When differences lead to greater status, power or privilege for some groups over the other it is called social stratification.
In modern Western societies, stratification is broadly organized into three main layers: upper class, middle class, and lower class. Each of these classes can be further subdivided into smaller classes.
For Max Weber, social class pertaining broadly to material wealth is distinguished from status class which is based on such variables as honor, prestige and religious affiliation. One of the ongoing issues in determining social stratification arises from the point that status inequalities between individuals are common, so it becomes a quantitative issue to determine how much inequality qualifies as stratification.

I think It is sad that although all human being is the same and equal, social stratification makes human being unequal. There should be a  scheme that prevent second-class citizen from inevitable poverty.

So. I want to know about scheme for second-class citizen in detail.