Following an interview on 2nd June 2005 with the Journal du dimanche, the historian Olivier Pétré-Grenouilleau, author of Traites négrières, essai d'histoire globale, was accused by the association CollectifDom of historical revisionism. In response to a question concerning the anti-Semitism of the (now discredited) comedian Dieudonné M'Bala M'Bala, Pétré-Grenouilleau stated that, 'It goes beyond the case of Dieudonné. That's also the problem with the Taubira law, which considers the slave trade in Negroes led by Europeans as a "crime against humanity", thereby implying a comparison with the Shoah. The slaves trades were not genocides. The trade did not aim to exterminate a people. The slave was a commercial good with a market value that was forced to work as hard as possible'. For CollectifDom, Pétré-Grenouilleau's ambiguous response suggested that the Taubira law (2001) was somehow responsible for anti-Semitism, that slavery was not a crime against humanity and that it was not acceptable to compare slavery to the Shoah. Their complaint attracted widespread media attention and the backlash of a group of historians (notably Pierre Nora) who devised an appeal, published on 13th December 2005 in Libération, entitled 'Freedom for history' ('Liberté pour l'histoire'). In this public statement, they called for the abrogation of all laws that risked restricting their freedom as historians, including the Taubira law. Following multiple media attacks, CollectifDom decided to withdraw their complaint rather than risk its credibility. This was announced during a press conference on 3rd February 2006.