Mind elaborating? The arguments in sibling comments seem to be some variant of "avoid escalating to more dangerous chemical agents". I don't see how that's relevant to protests. Are we seriously expecting the protesters to escalate to mustard gas because the police used tear gas?

shut the fuck up Saddam Hussein

regardless, i think that existence of LRAD is a valid reason for a civilian to own antitank weapons and that Vucic government should be destroyed