of the mass media in the Bush era". He said he felt like he was in "internal exile" following the September 11 attacks as the U.S. media had become "conservative and timid" and did not welcome the provocative art that he felt the need to create. Nevertheless, Spiegelman asserted he left not over political differences, as had been widely reported, but because The New Yorker was not interested in doing serialized work, which he wanted to do with his next project. Spiegelman responded to the September 11 attacks with In the Shadow of No Towers, commissioned by German newspaper Die Zeit, where it appeared throughout 2003. The Jewish Daily Forward was the only American periodical to serialize the feature. The collected work appeared in September 2004 as an oversized board book of two-page spreads which had to be turned on end to read. In the June 2006 edition of Harper's Magazine Spiegelman had an article published on the Jyllands-Posten Muhammad cartoons controversy; some interpretations of Islamic law prohibit the depiction of Muhammad. The Canadian chain of booksellers Indigo refused to sell the issue. Called "Drawing Blood: Outrageous Cartoons and the Art of Outrage", the article surveyed the sometimes dire effect political cartooning has for its creators, ranging from Honoré Daumier, who spent time in prison for his satirical work; to George Grosz, who faced exile. To Indigo the article seemed to promote the continuance of racial caricature. An internal memo advised Indigo staff to tell people: "the decision was made based on the fact that the content about to be published has been known to ignite demonstrations around the world." In response to the cartoons, Iranian president Mahmoud Ahmadinejad promoted an Iranian cartoon contest seeking anti-Semitic cartoons. The organizers of the contest intended to highlight what they perceived as Western double standards surrounding anti-Semitism and Islamophobia. Spiegelman produced a cartoon of a line of prisoners being led to the gas chambers; one stops to look at the corpses around him and says, "Ha! Ha! Ha! What’s really hilarious is that none of this is actually happening!" To promote literacy in young children, Mouly encouraged publishers to publish comics for children. Disappointed by publishers' lack of response, from 2008 she self-published a line of easy readers called Toon Books, by artists such as Spiegelman, Renée French, and Rutu Modan, and promotes the books to teachers and librarians for their educational value.