These are people you should be trying have a good relationship with. A few bad apples will ruin it for all. If neighborly relations continue to sour you can bet that Future projects will be met with strong opposition and more land will likely close (more on that later).
Quoted for posterity.
Climbers, beware...you heard it here first: support MPNA in opposing the campground, or there will be more land closures.
Oh yea, THAT'S sure to win folks to your view.
(Reminds me of "The beatings will continue until morale improves")