What in the hell are you talking about? This is literally the dumbest thing I’ve ever read on this site. And I’ve been around for some time.
Based on the facts presented in the article it makes perfect sense.
You walk up to the counter with your merchandise and pull our your greenbacks. The cashier says “We don’t take cash”. You say “What!”, perhaps rather loudly, and object. The security guard walks up, grabs you by the arm and physically drags you to the door and pushes you out. You have been assaulted. Not by a police officer, but by a private rent-a-cop, for trying to pay with cash.
What would you do? I don’t think I would beat down the security guard but I would certainly be spitting mad about it.
I think that there may have been more to it but the article does not say so.