On the other hand, there are some very obvious and legitimate reasons why such proof may be withheld from the general populace, two of those reasons being preservation of different sorts. It's not hard to imagine how video or photographic proof would result in every yahoo for hundreds of miles with a 4x4, an automatic firearm, a case of beer, and something to prove would show up looking to shoot first and ask questions later regarding something they didn't understand, could possibly make money from, or that could get them on tv.
The other being from the land owners themselves who wouldn't want the information to get out because they might not be real enthused about the prospect of having their land suddenly overrun by every yahoo for hundreds of miles with.....aka..... Skippy get's even