:We can develop an elaborate set of rules, but why don't we start with the bare minimum rule: never insult other editors in edit comments.  It is one thing to say, for example, (revert nationalist POV), and even this should probably be avoided.  But personal insults and ad hominem attacks should not be tolerated.  I can't think of any circumstances in which they would be justified.  Here are a few examples by  just from the history of Russophobia (feel free to to find examples by me and other people, but I doubt you will find many): 
 *(Balcer, go to the library and stop stalking. Period) 
 *(go away, troll) 
 *(there are no "serious doubts"; stop deleting things you don't like to hear only because you are too lazy to go to a library to check) 
 *(rv russophobic attacks) 

 This last one is especially hurtful, and is completely equivalent to calling someone a racist, a homophobe, or an antisemite.  There is no place for comments like this in edit summaries.  Anyone making comments like that should be blocked to cool off.