What is social exclusion? Give one example of it

Social Exclusion It is a process through which individuals or groups are excluded from facilities, benefits and opportunities that others enjoy.
According to the concept of social exclusion, poverty must be seen in terms of the poor having to live only in poor surroundings with other poor people, excluded from enjoying social equality with better-off people in better surroundings.
Example Its typical example is the working of caste system in India. In this system, people from certain castes are excluded from equal opportunities.