While interesting I would like to point out that many ranges and even public lands have been closed to shooting around here in recent years due to people leaving trash.
The worst offending items tend to be electronics, TVs, computers, monitors, etc
With the short use of many electronics many people seem to think the thing to do when they upgrade is to take the old stuff out and leave it in pieces around the landscape.
They leave many small pieces of plastic, metal, and are built with several toxic metals. In fact you are not even supposed to just throw many of them in the trash because of the toxic exotic materials used in parts of them. Spreading it around the surface as dust and pieces is certainly worse.
One of the ranges had volunteers wanting to clean it up as they removed many tons annually and the rangers said it was too toxic as a result of all such materials for them to even assume that liability and only someone hazmat certified would be permitted to do so. The result is the range was closed indefinitely due to the large volume of trash that even the volunteers were not allowed to remove.
Electronics are about the worst common item someone can shoot at the range. A single target leaves bits and pieces of various materials spread over the area, pieces too small to easily clean up but that add up to a lot of litter and give a poor appearance.
As someone generally in favor of independence and freedom, even I was pretty put off by the look of many public shooting areas and had to question if the public can handle such freedom. They look on par with many landfills.
Such practices mean that eventually the only legal shooting left will be at for profit private ranges that charge a fee and have a lot more rules and a less enjoyable atmosphere.