Stereotypes die hard!
I've had a similar experience in restaurants, when wearing a dinner jacket, because I was also going to the theatre. Usually to see an opera or ballet.
As I entered or left, other diners would ask me about the wine list or seating, etc.
I once remember, driving out on a very dark and stormy night, high in the mountains of Madeira. A police car came up fast behind, flashed his lights and pulled me over. He got out and came to the window, so since it was lashing with rain, I just wound the window down not attempting to get out. It was very dark and there was no light in the car. But he said. " Drive on the wrong side of the road, there may be branches and rocks falling of the cliff this side. Just toot your horn loudly on the bends." "Thank you officer. Will do."
It was only after he had driven off that I suddenly thought. He spoke to me in English, how did he know I was not German, French or Spanish ?
Here in Spain they can spot "guiris" a mile away. So, usually, can I. English, French and German are distinctive. Norwegians are not so easily identified.
I think you are deliberately missing the point entirely Petter! I could relate that my husband used to get quite irate that when we travelled extensively around Europe and he was invariably addressed in German which irritated him immensely, because at 6ft’ 6”, blond and 20 stones he looked more German than Irish....! However I’ll bet that is not quite as insulting as being assumed you must be a defendant and not a barrister when making an appearance in a British court!
But it was still more "stereotype" than racist. Just as wearing a black bow tie in a restaurant stereotypes a person, regardless of one's colour. Note the immediate apologies.
@Petter it’s both...in fact it’s a racial stereotype.