The Be Nice policy of SE is pretty clear:
Name-calling: Focus on the post, not the person. That includes terms that feel personal even when they're applied to posts (like "lazy", "ignorant", or "whiny").
Bigotry of any kind: Language likely to offend or alienate individuals or groups based on race, gender, sexual orientation, religion, etc. will not be tolerated. At all. (Those are just a few examples; when in doubt, just don't.)
But I see both regular users and moderators engaging in such behavior.
I've brought a couple of such comments to the notice of moderators and both are declined:
Original post: Was Bhagavad Gita a later interpolation?
You can ignore Bori people. Most of them are leftists. – The Destroyer ♦ Jun 10 at 7:26
bigotry of any kind is against SE policy, "Language likely to offend or alienate individuals or groups based on race, gender, sexual orientation, religion, etc. will not be tolerated. At all." – sv. 24 mins ago declined
If I come up RAM-Obedient-Research-Institue (RORI) edition today, can we get a tag for that too ? Scholarly brain does not equal discernment of truth. The main editor for this BORI book, V.S Sukthankar lived/studied in Britain & New-York, married a British woman etc. What else other than western atheistically-inclined interpretations can we expect from them. To answer your question, Their brain did not want to accept these extraordinary events, so they edited it out – ram Aug 24 at 22:48
name-calling and bigotry of any kind is not allowed on SE sites – sv. 45 mins ago declined
Both of those comments seem to be personally attacking or alienating the BORI scholars just for holding their own views. The second comment even goes into the personal life of one scholar.
I understand that regular users can take offense to all sorts of valid questions and comments and respond strongly in comments with personal attacks and name-calling, targeting their religious and philosophical orientation. This can be easily countered by flagging.
However, what should we do when moderators themselves engage in bigotry and actively support other users doing the same?
It's rather ironic that we want more Hindu scholars to join this website, yet, we are actively attacking them in the comments sections of several questions.