Edward Said issued a response to Huntington's thesis in his 2001 article, "The Clash of Ignorance". Said argues that Huntington's categorization of the world's fixed "civilizations" omits the dynamic interdependency and interaction of culture. A longtime critic of the Huntingtonian paradigm, and an outspoken proponent of Arab issues, Said (2004) also argues that the clash of civilizations thesis is an example of "the purest invidious racism, a sort of parody of Hitlerian science directed today against Arabs and Muslims" (p. 293).