I'm with Hollywood on this ... in fact, he said most everything I was going to say, and he probably said it better.
The other thought I had is to remember that many times one can present information matter-of-factly or even tactfully, but still receive an irrational response because not everyone receives, accepts, or tolerates constructive criticism or correction. Many people have become so conditioned to employing the 'victim' attitude that they have no concept of how to deal with blunt, factual, or even dispassionate delivery of ideas that compete with their own concepts.