I think all too often people are offended by some breach of etiquette and remain quiet about it. Unfortunately the bad feelings simmer inside and can surface in

I think all too often people are offended by some breach of etiquette and remain quiet about it. Unfortunately the bad feelings simmer inside and can surface in an ugly way. If someone has committed such a grievous infraction in your eyes it's best to address it right away with the individual that committed it instead of taking it out on someone else down the line.