I've worked security at a couple of those Black Friday sales. It was never my favorite thing to do, but at least it was interesting. I arrested four people at one six-hour sale, because I only had four sets of handcuffs with me.
Seriously, people are idiots. They thought there were so many people in the store than no one would notice them walking out with a $1000 TV, or an armload of $150 jeans. They were wrong.
Onward and upward,
airforce