 Complete the following phrase:  In 2005, Éditions du Rocher was sold to a pharmaceutical business. Prior to that, Nabe used to receive monthly payments in exchange for yielding his royalties, according to a non-written contract. Following the sale, the publishing house ended the publication of Nabes books and Nabe sued the company, thus retrieving the copyright ownership of all of his works. Finding himself without a publisher, Nabe spent the following years writing tracts, namely broadsides dealing with controversial current affairs and pasted on public walls all around Paris. Topics covered included euthanasia, the 2006 Prix Goncourt handed to Jonathan Littell, the accusations of antisemitism faced by cartoonist Siné, Zinedine Zidanes headbutting of Marco Materazzi during the 