1) Read my further replies. I think one can easily argue that the (stupid) explanation brought up in OPM might not even be blackface judging by common blackface definitions. 2) It's not just about ignorance. While there might be a broad consensus in the US about blackface there is none in Europe. There are many reasons for that and I feel that the issue is worth discussing. Just slapping anyone across the face daring to discuss blackface won't bring us anywhere.