I often wonder where civil and polite leaves off? It may depend on how deeply someone has offended you or the ones you love. While crawling through the jungel of Viet Nam I might have been offended by Jane Fonda sitting on a North Vietnamese Ack-Ack gun pointing it in my direction. Can one be civil and even polite while not helping such a person with a flat or loaning them a master link? Just food for thought.