I am sorry to disappoint you, but I have been seeing swastika paved in different places probably since world like 5 or so.
Of course I am not trying to defend people who are toxic and retarded to degree to pave these things, but I don't think that making a drama only because of someone decided to be edgelord in a game is justified.
Do you know that nickame of your character means literally a warrior or fighter? So why don't you behave as one, and if you don't like someone being shitty edgelord, you just whack them for that?
If there are too many of them - then find some help. They are from some faction - join hostile faction to them. You can't find such faction, start your own. It's not just a pvp game, but social game as well, don't make me teach how to play it.