Terming people from “backward” classes as BCs. Similarly using “Scheduled Castes”, “Scheduled Tribes”, “Dalits” or “Harijans” (Though it means servants of god, they are treated as “our” servants) to describe a particular set of people, referring to their caste, is derogatory. For example: The use of the word “Nigger” or Negro” referring to African-Americans (who were racially disadvantaged people), is considered extremely disparaging and the most offensive word in English, which has given rise to a revolutionary movement in the world.
Usage of such terms has to be stopped. Such terms, used intentionally or unintentionally or officially in texts, manuals, scripts, etc, cause harm or often, degrade people belonging to socially and economically disadvantaged groups. Having arrived at this point, it is necessary to replace such terms which publicize inequality, with words that do not perpetuate caste. However, this will not be a major contributor to abolish caste system, but will make a difference in eliminating caste system, at least in our daily lives.
While the Civil Rights Act of 1871 in the United States prohibits discrimination of African-Americans and protects them under the law, our country needs a law or probably, rules or a nationally accepted or “politically correct” book with such words (because, for a bill to become a LAW takes decades) which doesn’t perpetuate caste and prevents the discrimination of socially disadvantaged groups, at least through the use of language.