I believe is the 'obscenity' charge. The problem is since you determine that on a local level and Wikipedia is not only all over the state, but the country and the continent and the world at large, where do you get the jury to determine what obscenity is for all of that?
This is pretty much the same statute pressed against Christopher Handley. Neil Gaiman, creator of Coraline, stands with the lolicons.
No! Don't crush it, legalize it! The sex can stay illegal of course but media should be free since then the public can help the cops by matching things up in the vids when cops are too understaffed to do it.