I wonder though, what about folks who are amped up, or who simply don't want to give up? Neither is likely to acquiesce so easily. Seems like it has some uses, but not so much against a dedicated and determined foe.
Simple. You shoot them.
Typical conventional military forces are kitted out well for lethal force, but don't have much between shooting and shouting a warning. The key here is escalation options.
Lets say you are the commander of a unit guarding a facility. You have some embedded media with you. Groups of protesting civilians approach your position. You get on a loudspeaker and tell them to disperse. They don't. You tell them to disperse or else. They don't. You fire warning shots above their heads. Some, concealed in the crowd, fire back. What do you do?
If you do nothing, you are endangering your mission and the soldiers under your command. If you open-up and mow the crowd down, you are a war criminal, murdering civilians. More importantly, you are handing the enemy a huge moral victory that will probably effect the outcome of the war much more than the success or failure of your tactical mission.
Or, if you had something like this, you can zap the crowd. Real civilains (and more than likely the bad guys too) will jet. Anyone with the determination to continue towards your position is
very likely intending you harm. Even under most restrictive ROE, that would earn them a bullet to the centre-of-mass.
