Timothy Sandefur has an excellent quote from H.L. Mencken on how we ought to be responding to creationists.
This actual conflict is joined, and it is the height of absurdity for the…compromisers to seek to evade it with soft words. That conflict was not begun by science. It did not start with an invasion of the proper field of theological speculation by scientific raiders. It started with an invasion of the field of science by theological raiders. Now that it is on, it must be pressed vigorously from the scientific side, and without any flabby tenderness for theological susceptibilities. A defensive war is not enough; there must be a forthright onslaught upon the theological citadel, and every effort must be made to knock it down. For so long as it remains a stronghold, there will be no security for sound sense among us, and little for common decency. So long as it may be used as a recruiting-station and rallying-point for the rabble, science will have to submit to incessant forays, and the same forays will be directed against every sort of rational religion. The latter danger is not unobserved by the more enlightened theologians. They are well aware that, facing the Fundamentalists, they must either destroy or be destroyed. It is to be hoped that men of science will perceive the same plain fact, and so give over their vain effort to stay the enemy with weasel words.
Mencken sure was right — his prediction came true. It’s the 21st century. Let’s finally get around to demolishing the old superstitions.