Local police leave this card on your car in "your driveway" - good or bad?

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I live in an apartment complex in an area surrounded by a lot of other apartment complexes. I've been here for over a year, and have never seen nor heard any criminal/police activity here in that time.

A few nights ago, I got in late, after midnight. After a couple of hours, I realized I had left something in my car that I needed, so I put on a sweatshirt and walked down to the parking area (visible to many, myself included, from our apartment windows). When I got to the parking area, I noticed my car, and every car within sight had this orange card on the windshield.

On the front, this card gave some stats on car burglary, and tips on how to prevent it. On the back was a form (filled out by the officer), with little places to be checked depending on the specific situation. Here's what the card said, on this side, word for word:
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NCPD (my abbreviation): Citizen Advisory (police seal)

Auto Burglary: Are you the next victim? If I were a thief, I would have easily stolen the following clearly visible on your vehicle:

- Cell phone/pager..... -Sporting Equipment....-Purse and/or wallet
-Shopping bags.... -Electronic equipment....-Other

- Your vehicle was left unlocked

-Your vehicle was left parted in a secluded or dimly=lighted area. Please park in high traffic areas with safe, adequate lighting.

-If I were a thief, I would have moved on because your vehicle was properly locked and uninviting to me
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Electronic equipment was checked on my card - I had an ac adapter in the front seat.

Now, at first I felt comforted knowing the police were out and about and making a presence known. And I still, for the most part, feel that way.

But it occurred to me that what had taken place was, in the wee hours of the morning, the local police had gone to each parked car in my neighborhood, peered inside the windows, and, in some fashion, taken inventory of what was visible.

Again, I feel that good intentions were at the heart of this, and that promoting security was the goal, but some questions have cropped up in my mind about this.

Don't I have a right to privacy at my home? What if I had had something questionable in my car? What if I had had an almanac on the front seat (my grandmother used to give those as Christmas gifts)? If this is a good practice, then why not peer onto my porch/balcony? Why not shine a light thru the open windows of my apartment to help me be safe?

Before I wasn't worried about burglars. Now, I'm a little worried about the burglars and the pd.

Again, in the big scheme of things, I know this isn't a big deal. Local cops trying to subdue some crime problem I'm oblivious to, I'm sure. And part of me is glad to know they're out there. But part of me is still nagged by these questions.

What do you think?