Tear gas

Tear gas is a non-specific term for any chemical that is used to cause
temporary incapacitation through irritation of eyes and/or respiratory
system. Tear gas is used as a hand-held spray or in grenades. It is widely
used by police forces to subdue people in arrest or riot situations.

Popular tear gases include the eye irritants CS and CN, and the respiratory
irritant OC pepper spray.

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