Well look, you made it pretty clear in your OP we're using non-lethal munitions, so in most cases, I'm good to go. I mean, blasting a peaceful mass sit-in or something isn't really on my list of things to do today, but if the crowd is violent, looting, or looking to cause some serious damage- "Sarge? Can I fire the Tear-Gas Canister launcher next? Just once? Please?"
I mean, it's our duty to serve and protect the populace, and that includes the people who are out there, scared and confused and possibly about to get pulled into a conflict they don't want a part in, but that also includes the people right in front of you who are getting their self-defense in ahead of time, so we just knock 'em out and give them time to cool off, doing them a favor really, keeping things from escalating further and most importantly keeping the peace.