I was accused of shoplifting by a gigantic dude who moved in to detain me as I was going into my car. Could have gotten Walmart badge or paraphernalia from anywhere (most walmarts aren't that aggressive but this one was). I could have told him to eat shit and it was clear he was willing to get violent. At that point I would have had to decide whether to draw a weapon, because he clearly would have overpowered me and put me in imminent fear of death. I handed him my receipt with one hand while preparing for the possibility to draw a weapon with the other, thankfully he seemed satisfied and turned out to be a real Walmart employee.
I decided I didn't want to ever face that decision again so I never went back