Unnamed Negro outside Jail

This is the "someone" in "The Hound" to whom one of the Negroes in jail is yelling through the window (163). It could just as easily be a woman as a man, but while the race is not specified, other Yoknapatawpha fictions, in which friends and family of black prisoners often gather outside the same window - not to mention the etiquette of Jim Crow segregation, which makes it unlikely that a Negro in jail would be yelling at a white person - explain why we assume this "someone" is also black.