SO WHAT if a few AA women are cast as ladies in waiting ? What skin is it off of your ass ? Are you then asserting (of course you are) that AA actors should be excluded from period dramas wholesale, because they aren't 'realistic' ?
You c^nts apparently want to go back to the 'golden years' when John Wayne could play Ghengis Khan, Donna Reed an Indian Maiden, Elizabeth Taylor Cleopatra, Jeffrey Hunter Jesus.
This casting was completely appropriate, didn't mar the 'realism' of the drama in the slightest - other than giving a black lady or two a minor part in an almost completely white British (excellent) cast. A petty nonsensical racist concern which is the sum total of the bug up your silly hateful ass.