The Police Department is usually abbreviated PD.
Sham Shui Po Police Station was created in 1924.
Old Tai Po Police Station was created in 1899.
Post Office
In chemistry Po stands for Polonium
You would call him/her the chief of police.
"Fuzz" is an old fashioned slang term for the police. You hardly ever hear it any more. Other terms for police include bobbies and coppers, or cops. Nowadays, you even hear the slang "po-po."
Fuzz is to Britain as Po-po is to the urban black community. Means police officer in an unlikeable way.
Post Office!!
Police
There are many synonyms for police. For example: bobby, constable, cop, flatfoot, officer, patrolman, and many more. Modern slang also includes: Po-Po. SEE: http://thesaurus.reference.com/the?q=police&search=search
Woman Police Constable
MPO stand for Military Police Officers.