I wonder if there is a local paper in that county? Might be worth taking out some adds (even better if done near the next re-election campaign of the sheriff). Do they have a "patch".com page for that area. If so maybe posting there could spur people to examine their sheriff's actions/inactions. Even a FaceBook campaign targeted at the sheriff maybe helpful. Just brainstorming. Sadly there are many bad leaders in LEA's across the country, which in turn fosters bad LEO's under them.
Good on you for not going quietly into the night as they desire. +1