Thanks for the responses. It is really helping get an idea on where this mud falls on the rp/pk balance.

As far as "Why did you kill me?", is that really so bad? I mean that, when you get killed five times by the same person, you'd at least want to make sure that they're killing you for some IC reason. Now, going up to this person kicking and screaming and demanding an explanation and oh how so unfair and stupid you are is on the bad side. But maturely inquiring as to whether there really was some motive seems to be alright to me. But throwing a hissy-fit and raising everyone's blood pressure is stupid. I think some people have forgotten to have a rational, calm discussion. I personally have forgetten how to throw a hissy fit, anyway...

A new question:
Is there an in-game written up concept/role? Sorta like how you have a written description?

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"Never interrupt your enemy when he is making a mistake."