I agree racism should be dealt with, but in the end you are going to have to learn to ignore or simply just "block" someone. In real life if someone calls me something racist I could care less I just ignore them, I can't go telling on any idiot who acts racist toward me.Also another problem I see is the black sparring community trying to seperate themselves from the rest of the players. Everyday I come online and see gangnames like "Blacks 4 Life" or "Black iz Better". I also see a bunch of statuses basically trying too hard to emphasize the fact they are black. Im not saying this will help, but did you guys take the time to think what if you stopped trying to act so different from any other race/player and just play the game. If you like sparring then don't let anything stop you.
The other matter though is staff should be dealing with racism along with any vulgarity on the server, do your job.