In the traditional Indian caste system, the people have been divided into multiple castes. Every caste was representing a certain level of hierarchy. The people born in one caste were destined to live in that caste until the end of their lives.
The communication between the castes was very obscure. Most of the communication was going on between members of the same caste, but rarely with members of other higher or lower caste. The members of the higher castes did not communicated with the members of the lower castes because they were looking at them as lower beings, so they did not wanted to have anything with them, and it was humiliating for them to communicate with someone that is lower in the hierarchy then them.
Fortunately, the caste system has been forbid by law, so nowadays all the people are able to communicate with each other, progress in life, have opportunities, and not be discriminated against.
