How can I fight against China as an indivisual civil?

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This thread might be too ambiguous to discuss, but I am referring a news about China prohibiting to import Japan's seafood. And I also have seen that Chinese people are harassing many Japanese invidisual to against processed water although not really scientific. As a Japanese I thought of obligation to fight against this kind of something.

This is my first thread I have ever posted on a forums site in some years.