What is the significance of the t-shirt that Balram purchases in "The Fourth Night"?

This t-shirt is a symbol that represents the upper castes in Indian society. Balram purchases the shirt, which is described as white and plain with only an American logo on it, after seeing Mr. Ashok wear one into the mall. It leads Balram to buy a shirt so that he too can go into the elite society of the upper castes.