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https://en.wikipedia.org/wiki/Controversies_about_theword%22niggardly%22
I know this doesn't answer your question but there are a couple of good examples of offense being taken.
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Not a great parallel. This is a word that sounds like, but is not related to a racial slur. This situation is about a the use of a term that describes "the national movement of the Jewish people that supports the re-establishment of a Jewish homeland" (I googled for my own accuracy - source but is increasingly being used as a derogatorily term for all Jews. To then turn around and tell a Jewish person that they shouldn't be offended doesn't sit right with me. This is what you seemed to do to punkture.
salmonchild
dst2
Who gets to decide whats offensive?