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.


 * 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.