I think it is pretty safe to say I am one of the more critical people on this forum of cops. I'm also aware that not every cop is a corrupt ******* hellbent on ****ing with people. I got to agree with LenS. Though not exclusively, not even close, and despite the perception you may get from the numerous and onerous examples of cops being corrupt *******s, there do exist examples of people who happen to be cops being, you know, nice. And when talking about small towns with very few cops, far removed from large population centers, they are less likely to be corrupted as easily. Or more likely if they enter a town with already corrupt cops.
Point being, it isn't beneficial to make blanket characterizations of every cop ever, though that doesn't mean you shouldn't be skeptical. I'd be just as skeptical of the small town cop as a city cop. Difference? As LenS points out, in a small town you are more likely to end up on on a personal level in that small community. And you may find that he/she really does look out for the community as opposed to being the strong arm of an oppressive government. You may find out the opposite.