I was a shopper at the time. I had waited outside, had braved the crowds, had snagged what I was going to snag, and was currently in line. And had been waiting in line, patiently, for my turn for what was close to an hour from the back of the store until I was next. The store, while very crowded, was actually pretty tame in behavior.
Nobody attacked one another. Nobody stole from one another's baskets. It was actually fairly civil, even for waiting in line. Since it stretched the length of the store, people in line left small gaps for other people to slip between on their treks from one side to the other. No line jumpers happened around me the entire time I stood in line.
Then she comes along. She was... not a small worman. She comes prancing past the entire line and literally body checks me aside so hard I land three feet from where I was standing. Half the crowd is staring with their jaws on the floor as a kind man helps me (painfully) to my feet while the lady shoves my cart back a space and cuts in line.
I snap. I start screaming fat-insensitive epithets at her broad back. I am not proud of this, but I hope I can be forgiven considering the circumstances.
She ignores me the entire time and starts loading her items onto the counter. She also ignores the retail slave, who tries to tell her to walk her butt back to the end of the line. In short, the woman gives no fucks and the cashier WILL ring her up, right now, because her stuff is going on the counter and she's not going anywhere until she's rung up.
Then... Karma. Delicious, delicious Karma. The cashier gives the woman an arctic look and scans the first few items. Then stops. Then picks up the phone and makes a call.
A manager appears at a dead run with a police officer in tow. They look at the screen, then at the items on the counter, and then the very angry woman is cuffed! A Nasty Ass Black Friday Thief has been busted!
I caught a glimpse of the first few items rung up. The screen lists $5 kiddy toys from the clearance section. The items she's trying to BUY are expensive electronics. She swapped out clearance stickers and stuck them on the large electronic item boxes where the barcodes were, likely expecting the cashier to miss their presence as she manhandles the large items over the scanner.
I was rung up for my own items with no trouble. I then informed the officer of what she had done to me, as witnessed by several other people. Even if the attempted theft didn't stick, I was making sure my own complaint did. I got to laugh at her as I walked out the door with my items.
During my college years, I managed an electronics store. We rarely had people nick our goods, but this pair made up for it.
One fine Saturday afternoon, a couple of guys walked into the store, and instantly read "shady". Not just to me and the store owner, mind you, but to the civilians as well. One shopper came up to me out of kindness to let me know, and I nodded.
The show began: one guy tried to distract me and the owner with questions about the latest computer on one side of the store - while the other, rather unstealthily, started stacking stereo equipment near the front door. Pro tip: skulking and eye-darting is best left done to the pros.
Everyone is watching. The pair is oblivious to their obviousness. If I could have made popcorn for the audience, we'd have covered rent for the day.
Finally, the owner nodded me to the front. As the other guy was in the back preparing his next load, I had the pleasure of "noticing" the random pile of gear near the front, saying in a loud voice,
Me: "Whatever are all these boxes doing here? I had better restock them!"
And began moving them back.
They left rather abruptly, to laughter and applause.