I honestly can't figure out why we've suddenly got it into our heads that we have to pretend there were any black people walking around medieval England, white people along the Great Wall during its construction or openly gay people anywhere at any time until the later 20th century.

I honestly don't care if the movie is using contemporary society as the backdrop for whatever story they're trying to tell. I just find it ridiculous when they find a picture from WWI with a black guy somehow in the picture and use that to justify the inclusion of black people in a movie about WW1 in Europe. I don't have any problem at all with black people (being at least partially descended from them in the recent geneology, why would I?) but it's offensive to pretend that Shaka Zulu commanded an army of vikings, yes? Well, same goes in reverse.