okay lets break it down then an insult is a word used to express dislike of another person usually by pointing out flaws in their character this person believed that nigger was an insult and thus used it on a widowmaker he particuarly disliked thus he believes being black is a flaw and if your friends use it as a way to convey that they dislike someone such as a server who got their order wrong then yes they are unless youre trying to tell me he was calling the enemy niggers as a form of respect