What does social exclusion mean? Why is it involuntary?

(i) Social exclusion refers to ways in which individuals are cut off from full involvement in the wider society.
(ii) It is involuntary as it is practised regardless of the wishes of those who are excluded.
(iii) Rich people are never found sleeping on the pavements but poor people in cities and towns often do. Rich are not being excluded from access to pavements but they choose not to sleep there.
(iv) Prolonged experience of discriminatory or insulting behavior often produces a reaction on the part of the excluded who then stop trying for inclusion. Example- 'Upper' caste communities have often denied entry into temple for the 'lower' castes, especially Dalits.