In extreme cases, sonic weapons can cause nausea, dizziness, and even permanent damage. In this case, officials used it to declare unlawful assembly.

Crowd-control weapons can cause severe and sometimes permanent injuries. Chemical irritants affect the eyes, skin and lungs first, causing scratches to the surface of the eye, painful skin reactions, ...

A researcher talks about the risks of “less-lethal” weapons used against protesters.

Alarmed by a spike in pepper spray use and threats of sound cannons at protests, human rights groups want a review of "less lethal" weapons for crowd control.

GENEVA - UN human rights experts* today expressed concern over the acquisition and use of less lethal weapons for crowd control and protest management ...

Federal agents fire pepper balls at protesters from the roof of the ICE detention facility in Broadview, Illinois. Credit: Paul Goyette, CC BY 4.0 / Flickr The Department of Homeland Security (DHS) is ...