This is a popular idea, but it seems like a bad one. It limits the pool of highly qualified applicants, which we badly need to expand. I've seen arguments in favor of this rule that take the form of "why would you privilege nonresidents in the hiring process?", but that is a non sequitur: not requiring residency isn't a way of privileging nonresidents.
In addition, police officers sometimes point to the difficulty of policing in the places that they live. This seems to me like a secondary consideration, but perhaps one that also merits attention.
Seems to have worked out very well...
In adjacent Philadelphia, violent crime fell from 14 to 9 per 1000, the same ratio as Camden enjoyed. Therefore it stands to reason that Camden's violent, corrupt police force was not necessary to reduce crime. This is consistent with other evidence that aggressive, violent police tactics are not associated with lower crime.
Because the question should have been what it was like before, hey
https://www.tapinto.net/towns/camden/sections/law-and-justic...
you're right! It looks like it did work our rather well.
These aren't deep mysteries; police reform advocates have written volumes on these topics for decades.