The "etc", of course, are the usual suspects: malodorous hippies, al Qaeda trial lawyers, Sixties folksingers, and the usual gaggle of college-town lezzies. I question whether any actual ranchers are part of this movement.
How about adjacent LANDOWNERS since our nice town of 70thousand is conservative and people of the nature you mention are few and far between.
Come on down and question the ranchers. Ask them if they are worried about their water wells and ponds. Rightly or wrongly they are worried about contamination.