Humbling story; and a good one, too. I try to do my best to be genuinely polite... because you never know who the other guy is. Thanks for sharing that.
Great story.
In college, I cut grass for a living. That job taught me to 'never shit on the little guy'. People treated me like absolute shit because I was the yard man. Ever since I've done my best to be nice to the people that work the grunt jobs in life. The world needs ditch diggers, janitors, etc.
This story backs up my thoughts on that.