There is another long poem in law enforment that goes something like this:

They give me a wonderful uniform, but if it is not tight and pressed I get suspended.
They give me a police cruiser, but if it ever gets scratched or damaged I get suspended.
They give me a baton, but if I strike somebody I get suspended.
They teach me to drive fast, but if I speed I get suspended.
They give me pepper spray, but if I need to use it I get suspended.
They give me training to defend myself, but if I need to use it I get suspended.
They give me a gun to stop someone from hurting others, but if I use it I get suspended.

We all say what we would do... heck even police do.
The problem comes from the on going training that goes on to try everything possible 1st before shooting someone. Look how many officers now carry non-leathal alternatives.
This mental battle is going on the same time as the physical battle.
Hopefully the right choice is made and all the good guys go home.

Unfortunately because of our legal system and civil lawsuits the bad guy often becomes the victim or even the good guy and the police become the agressor or bad guy and instead of being suspneded for the items above the officer get fired or they resign on their own.