Sentence:  In the south, there are no servants but blacks; for the greater proportion of domestics being slaves all species of servitude whatever is looked upon as a degradation; and the slaves themselves entertain the very highest contempt for white servants, whom they designate as ‘<WSD>poor white trash</WSD>'. 
Meaning of the word marked with <WSD> tags:  White person or people employed in a servile position, for example, as a butler.