Okay but I loved the Doctor punching that guy in the face in Thin Ice cause of the message it sent. He gives Bill the speech about staying calm no matter what, about the importance of diplomacy, etc etc. You get the idea that if the guy had been an alien, he could have said anything about the time lords, or the doctor himself and the doctor would have let it go in the name of diplomacy. But here a line is drawn in the sand, here the Doctor shows us that no matter what the circumstance, racism is NEVER acceptable. Ever. You insult anyone, but especially his companion, in that way, and all bets are completely and utterly off. And I think that’s something our society really needs to hear right now.