To express or give respect to another person means that you are able to re-see them with eyes untainted by the haze of bias. When we see people for the first time what usually surfaces is an automatic reference to superficial qualities of attraction and repulsion. What we don't see is another human being. To respect someone means to set aside feelings about race, beauty, etiquette, and religion and to view them as having intrinsic worth.
Respecting someone also means that you refuse to put a price on their value. That is, you never auction off their potential to the highest bidder. To truly respect someone is to see them as a unique contribution to the world.
I disrespect my neighbor when I neglect to see how he or she might contribute to my own well being. I also disrespect myself when I fail to appreciate the experience of not being seen.