It's interesting you saying that because in Britain interracial relationships are pretty normal and probably haven't raised many eyebrows for many decades. That is except for maybe some extreme right wing people. Yet my American friends tell me it really is still an issue, which seems really sad and shocking.

I do think DW and Torchwood are great in that they have never made an issue out of same sex or interracial relationships. That is until Torchwood went to the US, filmed in Hollywood, and suddenly there were gay jokes and it was mentioned as a thing, not having been a thing before.