Heck, when I moved to New Delhi, everyone thought I was Sikh because my last name is Singh, even though my last name is a common Hindu last name in general and

Heck, when I moved to New Delhi, everyone thought I was Sikh because my last name is Singh, even though my last name is a common Hindu last name in general and not specific to Sikhs. So not even Indians are guaranteed to have the mapping of last name <-> demographic correct. (Speaking of, do all Sikhs count as Kshatriyas? Even the farmers in Punjab and Haryana? So confusing...)