I don't necessarily take offense to this, it's a fair point, but I think it's this mindset possessed by an immature player that causes the problems. I don't know quite what you mean by being "over" non-donors. If you mean "donated to help the server and so I'm more mature than normal players" I would have to disagree. Perhaps other people have a different view on this matter, but I consider myself a mature person, and, by that maturity standard, I am "above" about 80% of MCSG players, but am not a donor, because I cannot afford to become one (which kind of sucks).
Now assuming you agree that I can be mature, there is just as strong a chance that any normal player can be mature, and it is the notion that, by maturity, monetary wealth, or the color of your name that any player is "above" any other player, that problems are caused in the first place, and the first step toward preventing donor hate is to be rid of that mindset. If players act immature, you reserve the right to hate them as much as you want, but generalization isn't the way to go.