HANOVER, NIEDERSACHSEN - MARCH 15: A protester against internet censorship, wearing a Computer as a helmet, is seen outside Hanover Congress Centrum on March 15, 2015 in Hanover, Germany. German chancellor Angela Merkel and Deputy Prime Minister of People's Republic of China Ma Kai are scheduled to open the CeBIT computer trade later this evening. The CeBIT computer trade fair is the largest fair in the world, taking place from 16 to 20 March 2015 with China as this year' s partner country, underlining the Asian powerhouse economy' s growing role in the IT business.  (Photo by Alexander Koerner/Getty Images)