While graphic novels are relatively new to the world of libraries and literature, as they steadily gain readership and exposure, a growing number of titles have been brought under challenge. Here's a list from the American Library Association.
In the case of Art Spiegelman's Pulitzer Prize winning Maus, which was called out for being "Anti Ethnic", one wonders if the challengers had even read the work. If you haven't, you should. It is an excellent documentary-style account of actual Holocaust events which is at once harrowing, gripping and impactful. The anthropomorphic illustration lightens the mood a tad, but perhaps adds to the horror that it was in fact humans that were capable of and committed such acts.

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- submitted by Tom @ MPL Central