No one becomes a cop in a small town with good intentions. It's just power-tripping assholes from day one. People can say that the road to hell is paved with good intentions, and maybe they're right - but malice is a no-speed-limit freeway.
Cops in major cities have the occasional copaganda victim slip through, even if they generally don't last. Cops in small cities are probably the perfect spot between 'copaganda victim' and 'just looking for a job in this shit town', at least if one was going to take a guess on a broad and varied swathe of municipalities like that.
But in a small town, the fuck is a cop gonna do? If your town does have a problem with crime somehow, being a municipal cop isn't gonna cut it. If you were serious, you'd be looking to be a state trooper or some shit. If your town doesn't have a problem with crime, the fuck would you want to be a cop there for, assuming an idealist fallen to copaganda? To do nothing in your town of 250 people all day? That's not idealism, that's just looking for an easy job. Not like 100% bad, but it sure as shit ain't good intentions.
A cop in a small town, at best, is there for lack of a better job. Most cases, they're there because it allows them to play big man over all the yokels they grew up with.