Thousands of activists converged on Cancun to declare that the brutal economic model advanced by the World Trade Organisation was itself a form of war, writes author Naomi Klein. "War because privatization and deregulation kill - by pushing up prices on necessities like water and medicines and pushing down prices on raw commodities like coffee, making small farms unsustainable. War because those who resist are routinely arrested, beaten and even killed. War because when this kind of low-intensity repression fails to clear the path to corporate liberation, the real wars begin."