What are the various operational styles of the police?

Theres short questions just answer each question. Each question should be written in 2 paragraphs for each question please. Each question has youtube videos based on the question.

Question 1: What are the managerial concepts used in organizing police departments?

Question 2:How does the police selection process work?

Question 3: What are the various operational styles of the police?

Question 4: Is there such a thing as a police culture?

https://www.youtube.com/watch?v=UECVR1L5kXo

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