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In reply to the discussion: PC overkill on this forum [View all]tblue37
(68,444 posts)was not relevant to the issue at hand was offensive because it called attention to her being a redhead, and since redheads are, the alerter claims, discriminated against, any unnecessary flagging of her hair color when it is not relevant is offensive, sort of the way we are offended when an article comments on a female politician's or CEO's clothes, since they don't make an issue of a male politician's or CEOs clothes.
Now, as a redhead myself, I don't find it offensive when someone refers to me as a redhead, even when my red hair has no bearing on whatever we are discussing at the moment. I assume, though, that the alerter is a redhead and is hypersensensitive because he/she has been teased about it on occasion--or maybe even quite a lot. If the alerter is British, he/she might have a point about discrimination against redheads (or "gingers" as they call them), but I think that in the US red hair is often favored, which is why so many women dye their hair red these days.