In the case of the "k word", I think it has its place. I myself barely use it, as I'm a Gentile and it doesn't really look good for me to, but it serves its intended purpose. A kike is an evil, insane, or hopelessly wimpy Jew that is a disgrace to G-d, Israel, and fellow Jews. Ibrahim Foxman, Nellie the Weasel, Lewinsky, etc. are all kikes. That's just an accurate use of the word. It's the same as using the term ape for evil negroes. Obviously we do not believe all blacks are apes or are literally, physically primates.