Joining an RP is like joining a club. The person hosting the club has rules they expect you to follow. Sometimes club-leaders are lenient, sometimes they're not. If you join the club and are well aware of the host's rules and disagree with them, you are more than welcome to find a different club that appeals to you. No need to start an argument and potential drama over their (subjectively) nonsensical rules when you can just as easily find a better club, or host your own club with your own (subjectively) better rules.

I think this is a valid bitch for me too since I've had this happen twice to me: in a club I was a part of in high school, and in an RP as well. Thankfully I was just a bystander in both situations lol. Imho, it shouldn't be this hard to live a drama-free life and to just... idk, leave if you don't like the rules there. *shrug* Just thought I'd introduce a different perspective while we're on the topic. 

EDIT: I type really slow orz. Also Orpheus, I hate that too, when the killing is done to another RPer's character, especially if it was uncalled for / wasn't forewarned. :/