Here's a few that come immediately to mind. And Gamecock posted a Protestant caucus on a pro-life topic, that I can't find the link to at this time.
REFORMATION SUNDAY (Reformed Caucus)
Why the Reformers Read the Fathers [Calvinist/Reformed Caucus thread]
Wow! Those are disgraceful. I’m embarrassed!
If it happened, it shouldn’t have. I noticed that on the second one, a poster named “rrc” was banned pretty much as soon as he/she posted.