Isn't that just a tad hypocritical? Supposedly we hate Fred Phelps for picketing funerals and upsetting grieving relatives, so if we do exactly the same thing then how are we any better? Why should it be OK for us to do it, but not him? Because he 'deserves' to be hated on?
But of course we don't actually hate Fred Phelps - we love him - for giving us a safe outlet for our antisocial urges. If it wasn't for Fred Phelps (and people like him) we might be forced to direct our ire at less 'deserving' victims such as pedophiles, politicians, actors, or newbie posters who make spelling mistakes.
And the irony is that while Fred Phelps may be a loathsome individual who enjoys upsetting others with his extreme religious views, he's also right. Anybody who has actually read the Bible knows that God really does hate fags. We shouldn't be excoriating Fred Phelps for making plain the truly hateful nature of his God, we should be thanking him.