ETHICAL OR UNETHICAL (DO NOW)

I think that what Abner is doing is unethical. It is unethical because there is now a war between him and his enemies because of his actions. The first time his enemies did that he should have told his teacher and if they continued he should just ignore. But if he is up to the head with there comments he should tell them to stop it once and for all. Well still  I can understand that he wants to defend himself, but he shouldn't have sended or responded to those messages because he is continuing what they are doing.