You know, there's one interesting method which is inspired by a Chinese Weibo user, and I believe that this can be used to trigger and humiliate the Sinophobic ultranationalist crowds in Japan.
Make metal statues of the Imperial Japanese top war criminals that were involved in the invasion, plunder and slaughter of China in the kneeling position with heads lowered and hands bounded behind their backs, similar to the statues in front of the Yue Fei Tomb that represent culprits that betrayed and killed Yue Fei.
The figures should include-but-not-limited-to:
1. Hideki Tojo
2. Fumimaro Konoe
3. Yasuhiko Asaka
4. Iwane Matsui
5. Shiro Ishii
6. Masji Kitano
7. Isamu Cho, and
8. Nobosuke Kishi.
Have these statues lined up right in front of the main entrance of the Nanjing Massacre Memorial, with the visitors to the memorial free to vandalize and deface the statues, and with major domestic and international news agencies lined up to photograph and videotape this for the world audience to see.
Most importantly, Japan must be forced to televise and post about this across all news channels and social media sites in great detail.