Oh I'm an assassin lets kill this baby for no reason...ohh . yeah .. now you're deviating from manga facts with should and shouldn't .. it was mentioned by hiruzen himself .. and you have 5+ extra filler episodes to prove what i'm saying . ....
* they're assassin , not clowns , that's what they do , they kill people once they get the chance .
Either way protecting the village is the same thing as protecting the nazi germany