Let's be honest, as a pepper spray can not be unpleasant for the peppery, but also for the pepper ligand. The Japanese are already fuchsiger and have developed a self-defense mechanism, which is quite dangerous for the operator, it but the attacker fairly certain Chesscheckmate. The ideas? Spiderman and the New Year's Eve:

Net gun and li­quid laun­cher for stop­ping bag guys (thie­ves, rob­bers) in non-le­t­hal wea­pons de­mons­tra­ti­on, Japan.

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thats all folks! - Video not available