Crowd control at a comic book convention in Japan.
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Previously:
https://www.homemadetools.net/forum/...513#post135875
https://www.homemadetools.net/forum/...662#post190015
https://www.homemadetools.net/forum/...830#post152439
https://www.homemadetools.net/forum/...9677#post89811
https://www.homemadetools.net/forum/...534#post173960