Another article about a similar situation that trhway posted below: http://articles.latimes.com/2012/may/21/nation/la-na-nn-dena...
TLDR: Hunter kills a horse in a creek, fouling it for the local residents who rely on it & making them boil their water so its drinkable (very expensive to do).
Said hunter used dead horse to kill the majority of one of the most well known wolf packs out there, this hunter successfully fucked over the locals water supply, and gave the National Parks Service hard data that getting rid of the buffer zone was bad (as these wolves were part of their study.
Seems ridiculous to allow people to shit all over state & federal lands, creating serious health hazards and killing tourism.