A "swooshing sound" can then be heard. Campaigners say this was the moment when protesters "were targeted" with a "sound cannon". Sonic weapons, illegal in Serbia, send out sound waves ...

some version of a sonic cannon, was used.” “I have a lot of experience in participating and monitoring street protests and I have never seen a stampede happen in a second and along an almost ...

including the device known as a sound cannon,” Dacic said. “Police only use sound devices for warnings.” Sonic weapons use sound waves to incapacitate, disorient or harm individuals by ...

including the device known as a sound cannon,” he said. “Police only use sound devices for warnings.” Sonic weapons use sound waves to incapacitate, disorient or harm individuals by ...