Connections result in a general upsurge of protests: egocentric network analysis of social movement organizations after the Fukushima Nuclear Accident

Abstract

Since the Fukushima nuclear accident in 2011 (3/11), Japan has witnessed a nationwide upsurge of antinuclear demonstrations as well as protests against diverse concerns. Why did this upsurge of protests occur beyond the antinuclear concerns? The exact mechanism that caused this general upsurge of protests has not been explored in detail. Given the limited number of first-time participants, this phenomenon can be fully explained only through an analysis of network-building processes among social movement organizations (SMOs). Based on the first nationwide survey of SMOs conducted in Japan by our team in February 2018, covering 308 groups, we analyzed the constellation of the SMOs’ networks after 3/11, their logic of coalition building, and their network effects on mobilization. We observed that the new characteristics of the constellation of the SMOs’ networks are twofold. The first feature is that the networks of various SMOs were bridged by antinuclear groups. Antinuclear organizations served as the hub of SMOs’ networks, enabling the mobilization to cross different concerns. The second feature is the connections between the citizen groups and labor unions. Labor unions increase the participation during events by mobilizing their partner unions. Both new connections contributed to the general upsurge in large-scale demonstrations for various concerns after 3/11. Our paper contributes to the general discussion on the relation between coalition of SMOs and mobilization by focusing on the dyadic level of networks, and analyzing its effect for mobilization through egocentric network analysis.