There are certain rules of etiquette and class that people should be expected to follow. Like if you're going into someone's home, you do your best not to make a mess. If you're taking your dog out for a play date, you're going to want to make sure to keep your pooch in check so they don't get into a violent tiff with other people's puppies.
For some reason though when it comes to businesses, people's rules of propriety seem to go out the window, however. If you walk through a supermarket, you'll see tons of items that don't belong in certain aisles or departments just chilling on a shelf.
Ice cream in front of loves of wheat bread, or slabs of meat that should be refrigerated placed precariously on the edge of a 12-pack of Fresca.