Question

I am at a loss right now.. Can anyone help me think of the names of some historical figures in police history? It does not have to be any specific state, I just need a few people who did something remembered in history.. I have searched and searched, and am coming up to dead ends.
bobpursley
Some that come to mind:
Wyatt Earp
Bull O'Connor
J. Edgar Hoover
William J. Burns
bobpursley
and Allan Pinkerton
Bryan
Thank you very much! The information you provided was useful