摘要:This article is a chronological overview and discussion of the public's use of social media in Japan in response to the TEPCO (Tokyo Electric Power Company) Fukushima Daiichi nuclear disaster that occurred on 11 March 2011. Reactions have included defiance aimed at protecting children and protests against the government's nuclear policies. A mass media decline is apparent during the course of the events. However, there seem to be multiple levels of divides that have been preventing people from progressing beyond criticism to achieve effective activism.