Ha, I watched this happen at a Target here in SoCal. A group of people filled up their carts (3) with clothes and shoes, rushed out the door to a waiting van. Security didn't even try to stop them at all.
I would not expect an hourly employee barely making minimum wage with no benefits to even lift a finger to stop a potentially violent shoplifter. If it were me, I'd hold the door for them to get them out of there.