I was roaming as thief. Some thief killed me and started jumping and dropped siege on me. Naturally I went back and killed him this time, only for someone on my own server to start trash talking me, calling me kitten, noob, he will transfer to farm me, etc. He has in the same guild as the thief I killed.
The thief came back, and because my server mate stood on me, the thief could track my stealth and killed me. Then of course more trash talk and dropping siege.
Of course the toxicity is rampant from other servers, but how are people so awful they literally grief their own teammates? Actively helping enemy server kill your own server.