Dirty Harry

One of my all time favorite movies starring one of my favorite actors is Dirty Harry.  In the movie Clint Eastwood plays inspector 'Dirty Harry' Callahan, who is a San Francisco police officer with a dirty attitude and uses little methods to what the law prescribes. In the movie it becomes a menacing task for Callahan to apprehend a menacing killer at all cost, which later unravels into a cat-and-mouse game between the two men. One killer with a sinister, distasteful laughter. The other, a killer with just a plain dirty attitude who holds the badge.
On several occasions  Inspector Callahan broke or bent the law in order to uphold the law.  In my opinion this is an aspect of real life that usually does not get much attention.  How much power is society wiling to grant the police to ensure their safety?  Is torturing a serial killer in order to find and save a little girl unethical?  But if police are granted to much freedom there is potential for a George Orwellian society.
I believe that 'Dirty Harry' acted completely reasonably in order to keep the streets safer, except when he twistedly played with the bank robber by lifting his gun and pulling the trigger after the robber dropped his gun.  The robber wanted to know the answer to whether 'Dirty Harry' had fired 5 shots or 6 but if he had only shot 5 the 'Dirty Harry' would have shot an incapacitated unarmed man in the face with his .44 magnum.