We had customers just like this at my old grocery store (minus the assault on the police officer, but including the assaults on employees). I think they’re everywhere. I used to love the old, “I spend $400 here, every month!” routine – most of the time not a single employee would recognize them as ever having been in the store before. After 11 years in the business, I learned one thing: “When you’re done takin’ it in the ass from every customer in the joint, make sure to save some energy ’cause management wants their turn.”