Paul in Romans 12: 10b (HCSB) says "Outdo one another in showing honor." We need to give respect to everyone we come in contact with.
I read of a man watching a well-dressed businessman berating a Porter at an airport. The businessman kept getting louder and and more irate. The Porter kept his cool and was very professional. The businessman left in a huff, and the man watching told the Porter how impressed he was with his actions.
The Porter responded, "Oh it was nothing. You see, that man's going to Miami and his baggage - well they're going to San Francisco."
When we show disrespect to others, we often only hurt ourselves. God calls for us to show respect to others - they are created in His image - although it may be tarnished.
If we want to earn respect ourselves, go out and show someone else what it is like. Try it, it might just make you smile.