| By right_on on Wednesday, February 25, 2015 - 3:43 pm: | 
In India there is discrimination based on caste and since caste is not based on colour, if someone is from a lower caste, how does an upper caste person know?
| By right_on on Wednesday, February 25, 2015 - 3:52 pm: | 
Sorry! wrong site.
| By nutxcock4u on Friday, March 13, 2015 - 4:34 am: | 
By their education, clothing, manners and such.