In my opinion, it seems the police hadn't been able to effectively do their job in the past (for whatever reason), causing other retailers to look into private

In my opinion, it seems the police hadn't been able to effectively do their job in the past (for whatever reason), causing other retailers to look into private security options, yet now that Wal-Mart has essentially forced the police uphold the entirety of the laws (such as theft for small items), the police are complaining that nobody else is making them do those things. It likely comes down to a lack of proper resources given to the police departments....