Until the 90s, the Rolling Stones was banned from entering Japan. It appears to be as exciting as their first Japan tour that this month the ban was lifted on Negri. His last (I think) failed attempt was 5 years ago, when the 2008 G8 summit took place in Japan (Hardt was allowed to enter, but Negri was not). On Friday night he visited the sight where an anti-nuclear protest took place.
On Saturday he and Japanese scholars, such as Yoshihiko Ichida who specializes in the History of Social Philosophy, Chizuko Ueno who specializes in Sociology and Gender Studies, Yoshitaka Mouri who specializes in Sociology, Cultural Studies, and Media Studies, Mamoru Ito, who specializes in Sociology and Media Studies, gave lectures and exchanged their views, putting Negri's terms in the context of the situation in Japan after the catastrophic earthquake and nuclear accident in 2011. The event was entitled "Multitude and Power: The World after 3.11."(http://www.wismc.org/symposium/) I could not make it, but it was aired by an independent media called Our Planet TV. Another lecture is scheduled for April 12.(http://www.i-house.or.jp/programs/ushiba_negri/)