It always seems strange to me that people set so much significance on things like whether, for example a word is spelt "them" or "dem" or "these" or "dese". Better to use standard spelling, partly because that way people use their natural pronunciation (which often enough, ironically enough, is going to be "dem" and "dese").   

The same goes this side of the Atlantic for Rudyard Kipling trying to indicate cockney, or even William Barnes with Dorset dialect. The "funnt spelling" gets in the way of the poetry, and even messes up people's ability to get the accent right, if they are doing it that way.

But I can't really see why this kind of thing has much to do with racism either way.