How is it that they already don't have enough to do?

Seriously?

Balloon Juice - Not enough Crime:

So the cops are trying to gin some up:

Nine months ago, a similar police decoy program called Operation Lucky Bag was effectively shut down by prosecutors and judges who were concerned that it was sweeping up the civic-minded alongside those bent on larceny. Shopping bags, backpacks and purses were left around the subway system, then stealthily watched by undercover officers. They arrested anyone who took the items and walked past a police officer in uniform without reporting the discovery.

Now, a new version of the operation has started to catch people in public places outside the subways, and at much higher stakes, Criminal Court records show.

Unlike the initial program, in which the props were worth at most a few hundred dollars, the bags are now salted with real American Express cards, issued under pseudonyms to the Police Department.

Because the theft of a credit card is grand larceny, a Class E felony, those convicted could face sentences of up to four years. The charges in the first round of Operation Lucky Bag were nearly all petty larceny, a misdemeanor, with a maximum penalty of one year in jail.

...As noted in the comments:

It’s a twofer: you discourage good Samaritans (who might actually try to return the purses) while at the same time promoting a view of the police as a sneaky organization out to get you.

Idiots. Maybe if everyone reports them as suspicious packages and it costs them an arm and a leg to scramble the Homeland Security apparatus, it will nip this bullshit in the bud.