[seabass-labrax]

"Attack is the best form of defence" is a well-grounded doctrine, but it's not mutually exclusive with protecting yourself. Armies use armoured vehicles even though armour-piercing shells exist, for example.

It's also not always necessary; actively using force against the authorities would essentially be the start of a civil war, and personally I don't think starting a civil war is more likely to result in change than peaceful protest. For instance, Serbia is to some extent reliant on the EU, and has expressed an interest in joining. That should force the current government to reconsider and crack down on corruption much better than an attempted coup would.

Full disclosure: I have never been to Serbia and this is just my personal feeling. But for expressly peaceful protests to seamlessly turn into a full-blown revolution, and a successful one at that, seems incredibly unlikely to me.

[impossiblefork]

Yes, but these kinds of systems are not actually very good as military weapons. They are easily countered by simply shooting the operators.

[dmurray]

Are they? They seem easy enough to operate remotely, or by a guy in a tank or a bulletproof Popemobile or whatever.

[impossiblefork]

It's probably something like a horn, or a speaker. A couple of bullets are probably enough to break it.