Theory:Doctor Who television discontinuity and plot holes/The Magician's Apprentice


 * Moffat's attempts at being PC blow up twice. First we see Black men on what is revealed to be Skaro. Where Davros is. Davros is a Kaled, people known for their NAZI-like racism.
 * The only racism they ever showed, was towards the Thals (and the mutants) who they had been at war with for a thousand years (and going by the hints in the first episodes, its likely they started it). The idea that all Kaleds are white has never been suggested, nor is their any reason to assume they would care about race in their own species. Especially as by this point they are near the end of the war, and down to around one city left. If they are so desperate they recruit children for battles, who would honestly care about whether you were black or white?


 * And then in Essex 1138, there are very clearly Black people among those watching the Doctor playing the electric guitar, standing next to a tank. Of the three, the leats likely one is actually the Black people in Essex in 1138.
 * Um, their actually were black people in England during the middle ages, not many sure. But they did exist, many came over with the Romans during the invasion or settled their during the occupying period. Others (such as Moorish traders and mercenaries) came over at different periods. Legitemently concepts such as racism didn't really become mainstream until the slave trade.