I have occasionally wondered whether it is worth reporting shoplifters, after dobbing one in once, and then watching the cheeky little so-and-so walk free out of the store.
There was little the staff of the store could do - company policy was to not engage physically with the shoplifters. This one, I had watched put a packet of chips up his jumper and walk around the aisle looking at other goods.
I told a staff member, who confronted him - he said he was cold, that's why his hands were up his jumper, and they weren't coming out.
I walked away incredulous, and incensed that he knew he could brazenly take something and walk out without repercussions. On another occasion, same thing - shoplifter confronted outside the store - what's in your bag? "I know my rights, you can't touch me."
I felt like grabbing him, telling him "but I can touch your bag, you little *&^%*$" and emptying its contents. Assault, that's called, apparently.