Because black face isn't racist, and they know it. To imply black face is racist, unless done outwardly demeaning, is incorrect. People who are not racist think of it as an act of endearment, or tribute. To say that it's racist for a lighter skinned race to authentically emulate a black person carries a negative context. This directly implyies other races inately understand different skin color to equate with lesser self worth. This is not true, nor anything other than the projections of people that have no understanding of themselves or life and the true vastness of what is possible. Racism is a business, fueled by racist. Evil is here, and it is learned, cultivated, and used as a means to an end.