One of the most frustrating things about having your home or business broken into is the fact that the thieves are almost never caught in the act by law enforcement officials, and video isn't always enough to put them away for their crimes.
Convenience store owners are more familiar with this frustration than most, and for some reason even the lowliest and most cowardly crook will take a stab at robbing a convenience store for some quick cash.
But most convenience store crooks just grab the cash and dash, so how do you deal with a sneaky burglar who keeps breaking in and robbing the store in the middle of the night?
You set a trap for them, that's how, and one clever owner not only trapped the thief- he recorded the whole break-in on video! (Contains NSFW language)
-Via Viralnova
It's not unusual for police officers to take a long time to respond to break-in alarms in high-crime areas. Pomona, California, is pretty bad crime-wise.
I think the store owner was complaining about thieves stealing his stuff (not necessarily cash).
Lastly, the trap is the hallway door can only be opened from the room - once the door slams shut, the thief is trapped in the hallway with no way out. :)