Flash Mob、Passing by pretending to be a pedestrian in the crowd、People gather in public places and suddenly perform without warning.（dancing, playing etc.）go to、The act of disbanding after attracting the attention of those around you[1][2][3][4][5][6][7][8]。a type of guerrilla performance。2000年代の電子掲示板やSNSの普及とともにFlash Mobが現れ、has continued to expand。Something that has political meaning in a narrow sense（Demonstration activities, etc.）is not included。Sometimes it takes on a contemporary artistic appearance.。When a planner calls out to a large number of unspecified participants on the Internet or by word of mouth,、Avoid the hassle and cost of preparing in advance.、By seeking simple performance without requiring difficult techniques, etc.、The hurdles to participation are often set low.。

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