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

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.

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

Violent rioters in Minneapolis assault ICE agents, launch attacks, and issue death threats during Operation Metro Surge – prompting LRAD use.