“Centaurs are majestic, even sacred creatures,” said Firenze, “and we are not to be trifled with. Furthermore, none understand the portents of things to come so well as we, and we know that your ‘2006’ is going to be a most interesting year for this ‘President.’ These are not threats, but prophecy. And if you want to see what happens to humans who go around calling us ‘hybrids,’ just look at what we did to that hateful Dolores Umbridge.”
Read all about why this response came to be at American Airspace.
And more regarding the same issue at Pharyngula.