Apparently the fellow playing the face of the woman (and the artist who made the cake) is a black fellow.
The cake representing a black woman isn't really a problem. The issue is that the minister or her staff thought it a good idea to make a cake that screamed and bled when you ate it. It's frankly just astonishingly bizarre.
Bizarre? Of course, that seems to be the point. If they handed out pamphlets about female genital mutilation, nobody would be talking about it today. Of course we're not talking about anyway, mainly because everybody wants to be the first to be offended.