The armed guard is obviously not going to shoot anybody. Here in our town, off-duty police usually fill these positions. The point is the need for authority. And it's not a guy with a loaf of bread or a store-bought bucket of chicken that they try and skip out paying for. Those people are not the problem.
The problem is the blatant thieves. Those who come in and boost laundry detergent and meat and expensive shampoos and medicines.
Society has gotten out of control. This type of shoplifting needs to be put in check. Otherwise, you really will have some real-time scenarios from hell.
"A lie can travel half way around the world while the truth is putting on its shoes." ~Mark Twain "
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“…far from science having buried God, not only do the results of science point towards his existence, but the scientific enterprise itself is validated by his existence.”- Dr.John Lennox
“The whole war between the atheist and the theist comes down to this: the atheist believes a 'what' created the universe; the theist believes a 'who' created the universe.”
- Criss Jami, Killo
“The most difficult subjects can be explained to the most slow-witted man if he has not formed any idea of them already; but the simplest thing cannot be made clear to the most intelligent man if he is firmly persuaded that he knows already, without a shadow of a doubt, what is laid before him.” — Leo Tolstoy, The Kingdom of God is Within You
(1894).