Insofar as creationism is a core position held by fundamentalist and evangelical Christians, who represent about 20-25% of the American population, slurs upon the intelligence or learning ability of creationists is as bigoted as making an attack upon the intelligence or learning ability of African-Americans, who are about 12-13% of all Americans.
In what way? No one has claimed that you have any innate lack of learning ability, only that you have chosen to be ignorant. I have made no claim about race at all.
Facts are not slurs. The deficiency in learning ability is a fact demonstrated quite clearly on this thread. Any creationist who has the mental capacity is free to demonstrate that capacity by stating a good and true case for evolution, prior to arguing against it. The inability to state your opponent's position will cost you the debate every time.
It is not sufficient to present a charactiture of a position. In a debate you must argue against your opponent's best case.
The best case for evolution is not found in out of contest quotes. Nor is it found in 100 year old textbooks. Nor is it found in the speculative writings of science popularizers. Nor in Time Magazine, nor even in national Geographic. It isn't even found here on these threads.
Rather it is found in 200 years of painstaking research by tens of thousands of biologists and geologists, and their cumulative publications. If you have a case to present, it will need to be sufficient to overthrow nearly all of physics, chemistry, geology biology, and astronomy -- or it will at least have to present a mathematically self-consistent alternative to all those sciences. You really can't single out evolution as the bad guy without taking on all of science.