Here's a private room on the SE chat system. Look carefully at the URL.
"Irritating and obnoxious". That's what our moderators call the community they're meant to be looking after, when they think we aren't looking. According to the canonical blog post, moderators are supposed to
guide the community with gentle — but firm — intervention; respect [their] fellow community members at all times; demonstrate fairness and impartiality in [their] actions."
The name of this chatroom does NOT look like respecting their fellow community members.
Firstly (and this is why I'm posting here on meta), this is something I feel the community should be made aware of. Secondly, it's just possible the CMs don't know about it and will want to take action when they find out. I would think such a clear violation of the stated purpose of SE moderators calls for some kind of action, although I doubt it's serious enough to merit revoking anyone's diamond.
Please let me know if I'm going about addressing this issue in the wrong way!
Thanks to @Doorknob for letting me know about this.