Here is a good article in the Washington Post on the subject. If you can't access it, this excerpt sums it up:
"But I’m highlighting the vile words of Arbery’s killers for the elucidation of anyone who might believe that this kind of raw, unapologetic racism is a thing of the past. For the education of anyone who imagines that U.S. history can be taught in schools without teaching Black history, or that Black history can be taught without making anyone the slightest bit uncomfortable. For the benefit of anyone who fantasizes that we inhabit a nation where all individuals are judged not by the color of their skin but by the content of their character."
The point here being, that it isn't 'just a word'. It is an integral part of an ongoing historic process that dehumanises and victimises people solely on the basis of their apparent racial characteristics. The word causes real hurt to many people, even when used in a seemingly innocuous manner. For most of us, it should never be used at all.
