A day without a needless racial slur is better than a day with. Maybe the comment was ignorant, but using a racial slur to try to undermine it is even more ignorant and needless. It is a misappropriation of power of the word, it wasn't necessary, and is an incredibly disproportionate response.
My initial reaction to your comment was along the lines of
> Do you consider how a black person might feel writing it? It seems somewhat necessary to bring up past persecutions.
I had likened this to swearing to highlight emotional intent. However I have no idea how that word affects some people. I'm just a white guy who is in no position to have an opinion on whether this is okay and was wrong to belittle it.
