Sonic weapons can be used very effectively. They are safe enough even for civilians to handle and will make the targeted area unbearable. Useful for driving inhabitants out of their vehicles for civilians to then attack, beating them with clubs and slitting their throats until they bleed to death. Don't turn them over to government forces. Kill them and be sure to video record everything and upload the files everywhere.
https://en.wikipedia.org/wiki/Sonic_weaponry