I noticed that too. I suspect it's because the people doing it really expected "diversity" to solve all their problems for them and continue to desperately invoke it like a magic word. "But we're diverse, how can this be happening?"
While it may be a version of "how is this possible?" it might also be a frustration that any desired 'diverse police force' is being defeated by this flight.
Why does the article continuously repeat “racially diverse” like a parrot with Tourette’s syndrome?
I noticed that too. I suspect it’s because the people doing it really expected “diversity” to solve all their problems for them and continue to desperately invoke it like a magic word. “But we’re diverse, how can this be happening?”
No I think the author wants to make sure that readers understand that this is not just whites fleeing the poor conditions, but all of them.