Atrocities often take place when persons belonging to the SC community do not fulfill their 'caste functions' by doing ritually prescribed 'unclean' work or break the caste boundaries such as sitting in the bus or wearing a turban-often the preserve of the dominant castes.

In India, pre-professionals are 250% more likely to smoke than other students due to the use of sharing of cigarettes in the professional world and the importance of cigarettes in defining caste boundaries.

It advocates the study and implementation of the principles of the ancient Manusmriti, which is controversial for its espousal of caste boundaries and restrictions on the freedom of women.

The caste boundary between Kiryathil Nair and Samanthan Nair is very vague and therefore some families among the Kiryathils in the course of time may be recognized as Samanthan and vice-versa.

During Portuguese rule in the region, the converts came to be known as Salsette Christians and because Christianity does not recognise caste boundaries, a Portuguese education and conversion to Catholicism began to set them apart from the neighboring non-Christian populations, members of the family began to identify themselves with other converts in the region.

Even after the introduction of the varna concept to south India, caste boundaries in south India were not as marked as in north India, where the four-tier varna system placed the priestly Brahmins on top followed by the Kshatriyas, Vaishyas, and Shudras.

Social segregation and caste boundaries are well defined and maintained among British Sikhs through marriages.

Even workers using older methods, remaining within caste boundaries, could produce a lot of such items-given that enough of them were put to work on the projects.

Social equality requires the absence of legally enforced social class or caste boundaries and the absence of discrimination motivated by an inalienable part of a person's identity.