I think you all need to lighten up a little and just start having fun.You cannot play an MMORPG without interacting with others. You cannot interact with others without sometimes getting annoyed/frusterated by the antics of others. Your little RP world is *not* an impenetrable bubble that no evil/malevolent person can penetrate. People will behave as people intstinctively behave, and if someone wants to have a provokative character who likes to fight and/or start trouble then there is nothing you can do about it. You'll just have to deal with them and their behavior as best you can.
You're not the only person in the game who is entitled to the right of having fun. We'll play how we play and you'll play how you play, and along the way we'll have to deal with eachother. So get over it.