Before the torch relay in Nagano, a small-scale conflict occurred between Japanese dirty poison groups and Chinese patriotic groups near Nagano Station. The Japanese dirty poison kicked Chinese people, who retaliated by picking up flag poles! At least four Chinese were injured.
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(Note: The translation uses "dirty poison" as a direct translation, but this term may not be appropriate or accurate in English. A more suitable term might be needed depending on the context.)
Please let me know if you'd like any adjustments to the tone or terminology.