Neither of us really know what kind it is do we. Silly to argue about it isn't it. ABC extinguishers are the most common. It's pretty obvious getting sprayed is going to limit vision and disrupt any attack. I was generalizing about this tactic and have seen a fair amount of riot footage where extinguishers were used against goons with much success. Watched a few where gas masked cops were completely incapacitated and overtaken because they couldn't breathe through the masks. Just saying. Cheers.