Is it discriminatory for libraries to have a "Christian Fiction" bookshelf?

An interesting, if somewhat lengthy, ongoing discussion at the Fiction-L list.

As for myself, I prefer the one-big-collection method of shelving fiction. Heck, I'd stick the poetry and drama and essays-on-unrelated-topics-by-a-single-author into the same shelves, too, and just alphabetize them all by author. For good measure, throw in the books of criticism on a single author, too. Stick 'em right next to the books they comment on. Simpler that way. If it's absolutely necessary for library users to only look at one kind of book, use nifty colorful spine stickers or lists by genre.

Yeah, yeah. I know. "Too academic." (rolls eyes.)