When one thinks you are so knowledgeable that you only wish to show you are correct instead of listening to those you know who are actually wrong, one should determine if you need a humbling experience as you likely do.
Of course there are those who are wrong and would it be a waste of time to show them that they are? If they do not listen, probably so. If they are open minded, maybe not.
Try kindness, it usually is the right way to go, even in some trying times when you wish to tell someone off. If you tell them off, you might get punched, stabbed, or shot. Think of road rage over the silliest of things.
All well, I certainly do not have all the good answers. I am wrong many times. Playing it safe does make sense in many tense situations though. I suppose there can be exceptions.
Chrissy