Anti-nuclear protesters rally outside Japan prime minister’s office on 29 June, 2012. 150,000-200,000 people. (The police said 17,000 people.)
Before last time was 45,000 people on 22 June. (The police said 11,000 people.)

https://twitter.com/ishii_maki/status/218706050663198721/photo/1
https://twitter.com/ishii_maki/status/218712324066902016/photo/1
https://twitter.com/ishii_maki/status/218721235264217088/photo/1

http://mainichi.jp/graph/2012/06/30/20120630k0000m040057000c/001.html
http://www.asahi.com/national/update/0629/TKY201206290577.html
http://sankei.jp.msn.com/life/news/120629/trd12062923270026-n1.htm
http://www.fnn-news.com/news/headlines/articles/CONN00226467.html