Wizards are guilty.....
Now for serious; The problem comes when the Religious fanatics DO NOT accept at all the idea of evolution. Then, for these people, apes are just animals, and humans are something completely different, absolutely different. Nothing to do one thing with the other.
So what they need is to accept that evolution, EXISTS. And it happens EVERY day. DNA is changing every day, and lots of ppl from different etnias make children together, so there is NOT a pure species. In fact I think that the only moment when a "pure" species exists is the moment you get 1 specimen, and you declare it a species. Since it cannot modify substantially its own DNA, it will remain genetically identical. The moment he gets a child with a partner, it may happen, if both are pretty similar, that the child is close to their progenitors as well..... but it will be slightly different.
Evolution is allways working, allways there. You cannot stop it, because it happens every time a newborn comes to world.
If religious fanatics cannot swallow the idea of evolution, then it is pointless to talk them about taxonomy or science in general. Well, in many cases it will be pointless as well to talk with them at all, but this is another topic :-P