Do we have a duty to make strangers feel welcome?

I sincerely believe everyone should be treated with kindness and respect. I always, at least, treat people politely. I am an extremely empathetic person and seem to be able to feel other people. I can't stand bullies and loudmouthed people. I remember telling my ex-husband that "being louder does not make you right." With that said, I think its very important to listen carefully to what people say and strive to understand it. There is no problem that can't be worked out if you communicate with people. So, be calm and rational and smile, say hello, please, and thank-you. I often perform 'a random act of kindness'; I won over my grumpy neighbor that way. When someone is being mean to me I often kill them with kindness. Drives them crazy, but diffuses the situation. So kindness is what works for me almost every time.