Luxury car thieves are making a killing on the streets. In many cases, you’re helping them.

Police said organized crews find their marks by looking closely at a car’s sideview mirrors. In most high-end cars, the mirrors automatically tuck in once the car is locked. Untucked mirrors often means unlocked doors, valuables, and, often, a quick score on the black market. (Fort Lauderdale Police Dept./Courtesy)