I just happen to read this from The Japan Times:

This seems a valid insight. Japanese artists who achieve international fame, such as Takashi Murakami and Yoshitomo Nara, tend to be more reticent about their work than successful Chinese artists, such as Ai Weiwei, who frequently communicates with the world through various forms of social media.

The executive director of Art Fair Tokyo Misa Shin is disappointed in Japanese politicians, and I have strong resonances with her feelings. She may know that Ai Weiwei is pushed aside by the mainstream of Chinese media, just because he is not tame. It is so brave of him always to keep up and speak out his point of view.