in the words of Hamlet, "aye, there's the rub." that is why Walmart is wooing Sharpton... they want to be in NYC...
The shoplifting losses would be astronomical.
Walmart services a large black customer base in some areas of the country because of their low prices. They've probably simply made a business decision to pay Sharpton rather than having to bear bad publicity and boycotts from some of their customer base. Corporations don't like adverse publicity. They will pay to avoid it.