Japan on Monday protested against a Chinese memorial to a Korean who assassinated a Japanese official over a century ago, branding him a terrorist and saying the move did not help repair deteriorating ties.

The memorial honors Ahn Jung-geun, who in 1909 killed Hirobumi Ito, a former top Japanese official in Korea, which at that time was occupied by Japan.

http://www.reuters.com/article/2014/01/20/us-japan-china-idUSBREA0J0G120140120

On October 26, 1909, he assassinated Itō Hirobumi (伊藤博文), a four-time Prime Minister of Japan and former Resident-General of Korea,
After the shooting, An yelled out for Korean independence in Russian, stating "Корея! Ура!", and waving the Korean flag.

http://en.wikipedia.org/wiki/An_Jung-geun

Что интересно, в русскоязычной Википедии товарищ Ан однозначно значится террористом, в отличие от англоязычной, где этого слова нету и японоязычной, где это слово ставится под сомнение.