the American media. When CNN presenter Jeff Greenfield was asked why Chomsky was never on his show, he claimed that Chomsky might "be one of the leading intellectuals who can't talk on television. ... If you['ve] got a 22-minute show, and a guy takes five minutes to warm up, ... he's out". Greenfield described this need to "say things between two commercials" as the media's requirement for "concision". Chomsky has elaborated on this, saying that "the beauty of [concision] is that you can only repeat conventional thoughts. If you repeat conventional thoughts, you require zero evidence, like saying Osama Bin Laden is a bad guy, no evidence is required. However, if you say something that is true, although not a conventional truth, like the United States attacked South Vietnam, people are going to rightfully want evidence, and a whole lot of it, as they should. The format of the shows do not allow this type of evidence which is one of the reasons concision is critical." He's continued that if the media were better propagandists they would invite dissidents to speak more often because the time restraint would stop them from properly explaining their radical views and they "would sound like they were from Neptune." For this reason, Chomsky rejects many offers to appear on TV, preferring the written medium. Since his book 9-11 became a bestseller in the aftermath of the September 11, 2001 attacks, Chomsky has attracted more attention from the mainstream American media. For example, The New York Times published an article in May 2002 describing the popularity of 9-11. In January 2004, the Times published a highly critical review of Chomsky's Hegemony or Survival by Samantha Power, and in February, the Times published an op-ed by Chomsky himself, criticizing the Israeli West Bank Barrier for taking Palestinian land. Worldwide audience Despite his marginalization in the mainstream US media, Chomsky is one of the most globally famous figures of the left, especially among academics and university students, and frequently travels across the United States, Europe, and the Third World. He has a very large following of supporters worldwide as well as a dense speaking schedule, drawing large crowds wherever he goes. He is often booked up to two years in advance. He was one of the main speakers at the 2002 World Social Forum. He is interviewed at length in alternative media. The 1992 film Manufacturing Consent,