So many threads on here by OPs who are offended that someone else stood close to them / said something that could possibly be interpreted as a criticism of them / looked at them funny / failed to take notice of them. Etc. Etc. Etc.
AIBU to think that in 99% of cases, the other person is probably barely aware of the OP's existence? And that the OP is just projecting their own prejudice/secret fears/sensitivity on the world around them?
Or perhaps it's just me who is fairly oblivious to other people.