If it were the case that there was a specific user of this site who has had a long career in public forums of spreading aggressive and unapologetic anti semitism, including but in no way being limited to running multiple propagandist websites spreading literal Nazi rhetoric and libeling one of the most famous holocaust survivors, if it were the case that this user existed and they happened to also consistently post provocative and deceptive questions and answers on this site with the intent to push their hateful narrative, if all of this were the case how would I contact the moderators to make them aware of my grievances towards this users blatant attempts to make this website an outlet for their hate-speech?
The general answer is to be found here:
- Flag one of his posts for a moderator, and explain.
- Email firstname.lastname@example.org
If this problem is sensitive and needs some explanatory context etc., a third option that may work here (since moderation is not that stressful on this site) is asking in a chat (Symposium or elsewhere) for some direct chat. I have done that before, inviting to a private chatroom. These are only accessible for the users explicitly allowed and (all) moderators.
Jon Ericson provided a good answer on what to do noting that things can become complicated if there is engagement on the part of the one feeling offended: https://philosophy.meta.stackexchange.com/a/3332/29944
I should point out that responding to rude comments in kind makes moderation substantially more complicated. If one user continually goads another and the victim refuses to engage but just flags, it's really easy for the moderators to suspend the abusive user. But if both users trade insults, it just doesn't matter who instigated or who is in the right.
Here's a quote from the code of conduct page which provides examples of what count as inappropriate conduct and how to report it: https://philosophy.stackexchange.com/conduct
No subtle put-downs or unfriendly language. Even if you don’t intend it, this can have a negative impact on others.
No name-calling or personal attacks. Focus on the content, not the person. This includes terms that feel personal even when they're applied to content (e.g. “lazy”).
No bigotry. We don’t tolerate any language likely to offend or alienate people based on race, gender, sexual orientation, or religion — and those are just a few examples. When in doubt, just don’t.
No harassment. This includes, but isn’t limited to: bullying, intimidation, vulgar language, direct or indirect threats, sexually suggestive remarks, patterns of inappropriate social contact, and sustained disruptions of discussion.
Note that a flag may be raised for what might not be considered out-right "hate speech".
Raising a flag allows the user to address this issue effectively without becoming directly involved.