"Mayberry" departments are usually that way due to simply not being sued...yet.
A single incident can cause an overnight 180 by a mayor or Sheriff(despite Arfcom's naive love of elected LE politicians) or set the Civil Rights Industry, including the DOJ, on an officer/deputy as a target of opportunity. They especially hate peaceful majority white areas where crime and criminals get effectively held in check.
At this point, I don't consider it a moral act to encourage decent men to remain employed in LE.
America doesn't deserve them.