compare and contrast public police departments and private security agencies?, law homework help

I have a Criminal Justice assignment that required me to write a comparison paper that compare and contests public police departments and private security agencies. This is an opinion paper where I must present my own reason. Please so below the assignment instruction fro more clarification:

You are to compare and contrast public police departments and private security agencies in the USA. You are to render an opinion as too which one you feel may be more effective

please write a full paper with :

MLA style. 12 inch Double spaces

Also please be aware of Plagiarism it is

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