Iran's best-selling newspaper has launched a competition to find the best cartoon about the Holocaust in retaliation for the publication in many European countries of caricatures of the Prophet Mohammad. The Brussels-based Conference of European Rabbis (CER) denounced the idea and urged the Muslim world to do likewise. The Anti-Defamation League, which fights anti-semitism, described the competition as "deliberately inflammatory." The Iranian daily Hamshahri said the contest was designed to test the boundaries of free speech -- the reason given by many European newspapers for publishing the cartoons of the Prophet. "Does Western free speech allow working on issues like America and Israel's crimes or an incident like the Holocaust or is this freedom of speech only good for insulting the holy values of divine religions?" the paper asked.