By the way, for anyone interested in reading more, a fascinating read is the chapter on the Hindu Caste System in the book "Tarikh Al Hind" written by Al Biruni, Persian scholar, during his visit to India from 1017 to 1030.

It was written 1,000 years ago, but could have been written 75 years ago. It reads that fresh.

http://www.columbia.edu/cu/lweb/digital/collections/cul/text...

The level of oppression of lower castes (described in this book) is unbelievable, and remains partly practiced even today. The biggest problem was that you couldn't escape your caste ("caste" is derived from "cast", something you were locked, or cast, into).