Having worked and also owned my own businesses for many years, automatic response would be to confront and try to stop someone shoplifitng. This I've done many times over the years irrespective of whether it was my own business or working for someone else. And yes, during that time there has been the odd response such as having knives and the odd hammer pulled on me. Even a few months ago, one such incident ended in a direct physical altercation where I gave as good as I got.
Now there have been some valid points made, as well as some interesting ones also. So I'd like to throw a few pointers out from my own perspective...
Some ask "why directly challenge someone knowing you could become collateral damage." - Well several reasons, such as viewing it as personal affront, that they are taking the piss out of you or your colleagues particularly when you're looking straight at them and they shout back at you "why are you looking at me for? I'm not doing anything" as items are being blatantly stuffed inside their jackets/trousers etc.
Also importantly, by turning a blind eye, means they'll see you as an easy target and come back repeatedly. Quite often word will get around and others will visit.
Independants or SME's indeed such things will directly impact upon the bottom line. As for the big multiple's ok so some may say "ahh they're big muvver fuckers they can absorb the losses." - On the whole, financially they most probably can. However, stores in their portfolio showing frequent losses will naturally light up on their radar. Possible outcomes? - How about a change in personnel of even store closure if viewed as being "economically not up to expected standards."
The matter of stealing food itself. People do steal it to sell it on. I've seen it and also been told about it from others. There's a local grocery store not so far away from where I worked. Part of a chain and often targeted usually between the hours of when they open at 8am to 9:30am because after that time, that's when their security guard would begin his shift.
Now it wasn't just the usual items getting lifted such as jars of coffee, but people have walked in to stuff items such as legs of frozen lamb down their trackie bottoms to sell on later on. (The lamb, not their tracksuit bottoms).
So basically, anything which people use on a regular basis will be targeted on their shopping lists, be it food items and especially toiletries such as toothbrushes, toothpastes, bodysprays, shower gels, sanitary towels - yes sanitary towels.
As I said, challenging someone from stealing would for me anyway be more or less an autonomous response based on what I've seen and experienced over the years.
However, in this particular case there are obviously more underlying issues leading to quite the moral and ethical dilemna. To steal to eat to feed themselves or their families it's a fight for survival and it may be the only option they have. Desparate measures, desparate actions. It's a tough one to give a definite answer to.
I can say that in this day and age, where there is more reliance on food banks, food poverty and starvation exists, it's an indictment of the fucked up society in which we inhabit. But that's probably for another thread.