An Amnesty International member covers her mouth during an event in Sydney on July 30, 2008 as part of a campaign to end internet censorship in China. With the Beijing Olympic Games fast approaching, Amnesty International who are concerned about the involvement of internet companies in censorship in China, were encouraging Sydney-siders to tear down a 20-metre yellow wall stacked with cardboard bricks and which represents the 'Great Firewall of China'.  AFP PHOTO / Greg WOOD (Photo credit should read GREG WOOD/AFP/Getty Images)