LRAD sound weapons at protests use focused acoustic beams up to 162 decibels that cause permanent hearing damage, but distance and industrial earplugs provide effective protection.

Crowd control is a constant challenge to law enforcement -- how to stop potential troublemakers without endangering those who are simply in the wrong place at the wrong time. Rubber bullets can kill, ...

On a suburban street in Maple Grove, a device first built for battlefields and warships was pointed at a crowd of Minnesota protesters. The long-range acoustic system, sometimes described by critics ...

During protests in the USA, security authorities use LRAD systems for announcements and crowd control. How do these "sound cannons" work?

More than 119,000 people have been injured by tear gas and other chemical irritants during protests around the world since 2015, while at least 2,190 people have been injured by rubber bullets and ...

Several police departments across America are planning to try a new device that uses focused sound, turned way up. These so-called non-lethal... Focused Sound 'Laser' for Crowd Control Crowd control ...