Should New Zealand police carry guns?

Firstly, New Zealand police should not have guns because someone could get killed on accident.

Example: There was a case of a police killing a person on accident and it happened on a street or in a town.

I do not want my brother or sisters to see a police carrying a gun around the city.

There are two other reasons police don’t carry guns. 

I don’t think that the police shouldn’t carry guns because it is expensive to supply guns, It won't affect our community and safer.