To learn about political struggles in the past: Many links to historic films (on youtube) about social movements in Japan in the 60ies and 70ies. See strikes, riots, evictions and heavy battles with police.
East Asia Anti-Japan Armed Front bombed Mitsubishi’s building 1975
http://www.youtube.com/watch?v=F7vpfzg0aq8
http://www.youtube.com/watch?v=w7Z9poCY9Sc
Red Army faction, Hijack and occupy embassy 1970-78
http://www.youtube.com/watch?v=xlDKdtvKzbc
http://www.youtube.com/watch?v=AHJYt_5IE_A
http://www.youtube.com/watch?v=a2xPsN6sCyQ
http://www.youtube.com/watch?v=gZfxl_NVr_g
http://www.youtube.com/watch?v=TsmmjeLaZyE
Narita airport struggle 1967-77
http://www.youtube.com/watch?v=rAxm69FernU
http://www.youtube.com/watch?v=k4wCN6_sqio
http://www.youtube.com/watch?v=RjonZ-G-O8Q
http://www.youtube.com/watch?v=9UHUP662Pis
another student movement in 1978-69
http://www.youtube.com/watch?v=wvUJN9rhD3Q
http://www.youtube.com/watch?v=QbwZVQlkK5M
http://www.youtube.com/watch?v=bhboOwV7HGI
http://www.youtube.com/watch?v=8yve2mvu2Zs
United Red Army 1972
http://www.youtube.com/watch?v=XF8JoVte2DY
http://www.youtube.com/watch?v=5QduJSZ4F00
http://www.youtube.com/watch?v=-omqpElkk14
http://www.youtube.com/watch?v=qAquLql17SA
Koji Wakamatsu’s New Film about United Red Army
http://www.youtube.com/watch?v=4n4fDprVgrY
Source: youtube