Reading through the comments. Seems to be a lot of misunderstanding between 'common courtesy' and 'reverance'. You can respect someone to your own standards, passively as a human being without needing to respect them as individuals; as personalities, again, to your own standards. I also like to give people - generally anyone I meet, within reason, at least a benefit of a doubt. May just have caught them on a bad day or at a bad time. The former is a benchmark, and the latter is very individualistic, interpersonal and works on a case by case basis.