Ngozi Fulani was born Marlene Headley in Britain of Caribbean background. She seems to be one who has a hair trigger where the subject of her racial category is concerned and Lady Hussey walked right into the pitfall of questioning her - albeit innocently. Ms. Fulani was dressed in a style that was redolent of Africa and has a name that is not typically European. Lady Hussey should not have pursued the matter quite as she did, but I would hardly call it offensive let alone abusive - merely insensitive. Storm in a teacup in the real world.
I have had an experience that gave me a sense of what she may have felt, sensitized as she must be by exposure to casual racism - and some not so casual - for years. I am white Caucasian, brown eyed with dark curly hair - nothing unusual but I was presumed in an inconsequential conversation to be Jewish by a lecturer at college. He meant no offence at all, and none was taken, but the surprise I felt was far greater than I would have expected. I felt alienated from the majority of other students in this man's eyes. He could have assumed I was many ethnicities or faiths, it wasn't to do with being thought Jewish. It was the knowledge that this chap, and maybe others whose views are unknown, had segregated me from the 'norm' based on the most flimsy assumptions. Tolerance and understanding are the foundations of good manners.