I take it that's a joke, Togo!
Naomi. Of course it would encourage criminals to "arm up" before committing a crime. They commit robbery not to murder the police but to get away with money, etc. If they knew that the police would all be armed, that would be the reason they would carry the guns. No armed police - no reason to arm themselves in the first place.
Murderering a policeman means, life imprisonment.