The n-word is legal too, but no one is going to use it on here because he/she'd be banned, probably, for lack of "civility." I don't see Anti-semitic speech as any more "civil" than the n-word. I would think that slurs against Jews would be removed just as readily. 

For the RG to allow such language to remain taints the newspaper by association, which is really not useful now that the "President" has reopened the Pandora's Box of white supremacism. 

The same is true of homophobic slurs, and slurs against other minority identities. These are not civil speech.