“Serbian officials were forced to admit on Wednesday, 19 March, that there was a Long Range Acoustic Device (LRAD) on the streets of Belgrade on 15 March, which they had previously denied.”
Serbia’s interior minister changed his story three times in three days. First there was no sound cannon, then the devices sat boxed in storage, then one was there as a megaphone. The crowd scattered during a silence for the Novi Sad dead. Using such a device is illegal in Serbia.