Why would any other group need a derogatory word for gentiles?
Almost every group has an insult for those who are outside of the group and complimentary words for those with in.
That you seem to think Jews are unique in this, or in having a word for those bigots who dislike them is just plain childish.
The homosexual LGBT community have words that fit the bill. As did Nazis, the Imperial English, Americans from the southern states, Arabic cultures, the French, and any other community.
I assume you are trying to defend your antisemitic posts with an equally unsavory post.
Ask yourself if the argument would still be valid if applied to us English.
Why do we have a word for those who are not English "foreign". (Other examples are clear breaches of the MA).
Why do we have a word for those who are of our superior culture: "Limey", (or "Anglo saxon" or "gentleman" or "codger" or "chap").
Why do we have the word Anglophobe or anti-british?