I have a social theory you can tell the wealth and education level of a neighborhood and clientele by how the parking lots of the stores look like and placement of unwanted merchandise. In a WalMart a town from me you see people leaving meat out on a random shelf, carts all over the place, people stopping in the road to wait for people. You can map the bad neighborhoods and decline of politeness and respect by where the WalMarts are and how they look.