If you’ve just been snubbed (by that I mean not the malicious kind like you engaged them in conversation, they definitely heard you and decided not to talk back but the pretend not to see you kind) and you don’t want to choose anger or resentment I think the following may help.
It’s likely that the reason they pretend not to see you is because they experience social anxiety and the prospect of making small talk is so daunting that they prefer to avoid it altogether and pretend they don’t see you.
So this snub might not be a personal slight but a reason to sympathize with the other.
Thomas Duggan 