I think it is up to us all to set an example.I think we do our best to encourage good manners in schools but all too often I have watched adults being extremely rude towards children and teenagers- which is hardly a good example!

Being polite costs nothing, and can even be an effective "weapon" to use against someone who has been rude or inconsiderate. I've often had a red- faced ,or even friendly, apology from someone who has been on the receiving end of a pleasant smile and a thank-you when they clearly haven't deserved it!It makes you feel good too! It's very hard to be aggressive towards someone who you have clearly inconvenienced or been rude to but has still given you a friendly smile.