Retail workers are people too.
People should be required to work at least a week in retail before being allowed to shop. Like a shopping license that you were only able to get after having had lessons on common courtesy, humbleness and most of all inside voice.
As I wear my retail worker shoes, I've noticed that I became a much better costumer too. I don't walk into a store make a mess and leave it because there are people there whose job is to clean it up. You don't call 911 when you don't have an emergency just because that is their job.
"Hello? Fire Department? Yes, please come earn your pay, you lazy bastards."