Mostly on TSR, but I don't doubt there are people elsewhere who have the same.
For example:
Those who are privately educated as superior to those who aren't.
Those who do a STEM degree are superior to those who aren't.
Those who go to Oxbridge/RG unis are superior to those who aren't.
I personally think it's just pathetic and childish. An A is an A no matter what subject or what school it was achieved at. A job is a job, no matter where it is or how much is being earned- people still work hard for their money either way.
I'm just unsure what makes people think they're better than others, and why they can be rude to others who aren't following the same path as them, or aren't following a traditionally respected path etc.