I'd have to agree with Darksider in that it sounds like you've just come across some bad servers. Most servers I've found have pretty well mannered people when it comes to obscene names. Sure you have your typical drain *****s and heal sluts, but nobody throwing down n-bombs. Seattle Saber Only CTF for one, and Detroit Gibfest.
I do agree that is pretty da/\/\n sad, the level of ignorance of some people. I can't believe that there are people out there that still really believe that kind of crap. Going after Lando for that stupid taunt of his would be a much more worthy task rather than going after him for the color of his skin!
(I think it's probably more annoying than the Stormie's taunt if u ask me.)
Hang in there Hiteche5. Your class will be a shining beacon, and remember all those racist, ignorant folks WILL get what's coming to them in the end.