Why is it that Catholics are making such an uproar about the DaVinci Code?

Notice that other Christ based religions are not making an uproar like the Catholics. I have not heard on the news about Protestants, Lutheran, COGIC etc... wanting the banning of the DaVinci Code. Its just the Catholics that are causing this m uproar. Like I have stated previous, it makes you wonder if the "Catholics" are hiding something.