It's highly likely that the PSA is out because of Mr. Graff's incident/published letter.   Others have experienced similar robberies, but this reminder happens to be on the heels of yesterday's letter.   Their garage was opened by a garage door opener that was found in their guest's (locked) car outside.
A few years ago, my neighbor accidentally left garage door opened all night and things were stolen from inside. They never used to lock the door leading into the house/including that night. They were very lucky and have locked it ever since.