How have police (law enforcement) become more professional over the years? I need in depth answers

Thirty years later, law enforcement has changed and NIJ and. Harvard's and coherence — are not new in themselves, but together they provide an account of developments in policing during the last 20 years that ... in these terms, unprofessional, but professional increasingly defines the ambitions of police.

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they had banned mine while i was answering a question

answer:

a bird as actual bird