::Nope. The email was not sent through wikipedia email system. I doubt that person who sent the email is even active in that article, though he and many other may join in soon. Also, as of who is doing harassment, I have no way to know. My old useraccount is obscure so, if the access record of the page can be matched with the I.P. address of either one of these user, then identification may be possible but that may not be technologically feasible. On the other hand, I think it is possible to take some corrective action in term of their behaviour in that article.  
 ::Firstly, I would like accusation of bias, especially based on my Japanese nationality/ethnicity to stop. Calling someone being biased is against wikipedia civility already. Any accusation based on nationality/ethnicity is just not nice thing to do. I requested them to stop few times but they ignored it so I left the article in Sep.  
 ::Secondly, I would like an Admin to preside over edit disputes, especially in regard to the section dealing with Domestic Abuse. Currently, any content which is not really favourable to LBP's perspective is accused of being biased irrespective of verifiability and are being eliminated. I'm a bit tired of telling them that, if an American news media says that Japan object to signing treaty due to insufficient protection given to domestic abuse victim and a published academic paper written by an American law professor says that domestic abuse protection is an area which is seriously defective in the Hague Convention, then such content should stay.  

 ::It is more important that they understand that my edits and contribution are legitimate and that their conduct in and outside of wikipedia is serious breach of wikipedia civility.  After all, even if they get banned, they can keep harassing me in facebook if they believe that they were unjustly treated. I would like to engage in civil and productive editing. Then I don't have to be afraid of harassment.  

 ::I understand you are busy right now. Could you refer this to another admin. But please pick an admin which would be seen as neutral.