Discontent can be heady. It can also fuel a colourful roadshow. The World Social Forum has come to Mumbai and an amorphous community of social activists, anti-globalisation polemists, environmental agitationists, cultural conscience keepers and anything-goes anarchists has set up temporary base. Arundhati Roy has strummed the opening tune of anti-imperialism: America's efforts at empire-building must be debated no longer, she decreed, it's time for action. Shirin Ebadi, Nobel Peace Prize winner from Iran, has made a case for universal human rights, for every earthling's entitlement to a life free of poverty...editorial