Rudeness and Entitlement

Why is it that some people who have more than you, feel that they can be rude and entitled to more than you?  In my opinion people like me who grew up with the Golden Rule ingrained it them live by it.  People who grew up with the belief that people who have more deserve more live by that rule.  In those cases entitlement begets rudeness.

I'm sure that all of us have encountered the person that has achieved enough material wealth to look down on those of that don't have the same things.  People who cut you off in traffic or the parking lot because they have a more expensive car.  The person who yells at the cashier to get what they want.  You know them as the rude person who cut you off or takes way too much time yelling at the cashier. 

To counter this I have taken to pointing and laughing.  Why you may ask?  Well it's rather simple if you subscribe to the whole golden rule philosophy.  Do unto others as you would have them do unto you.  Well obviously rude people want people to be rude to them, what is more rude than pointing and laughing?  Just a thought.